Loud Hailers Load Hailers from Standard Horiziom, Furuno and Megaphones

Intercom Speaker for VLH-3000A Loud Hailer - Black Redesigned for clear, crisp, and audible reception, the Standard Horizon MLS-410LH Intercom Speaker acts as a secondary speaker/PA for receiving and transmitting, via the Push To Alert (PTA) button, with the VLH-3000A Loud Hailer.   Compatible With: Standard Horizon VLH-3000A Loud Hailer Features: Flush or bracket mounted Compact size Weather-resistant  Technical Specifications: Speaker Cable Length - 6.5' (2 M) Dimensions (Diameter) - 5" Maximum Power - 10 Watts Speaker Impedance - 4 Ohm In the Box: Speaker w/speaker wire Mounting bracket Instruction manual *Sold as an Individual 

Intercom Speaker for VLH-3000A Loud Hailer - White  Redesigned for clear, crisp and audible reception, the Standard Horizon MLS-410LH Intercom Speaker acts as a secondary speaker/PA for receiving and transmitting, via the Push To Alert (PTA) button, with the VLH-3000A Loud Hailer.   Compatible With: Standard Horizon VLH-3000A Loud Hailer Features: Flush or bracket mounted Compact size Weather-resistant  Technical Specifications: Speaker Cable Length - 6.5' (2 M) Dimensions (Diameter) - 5" Maximum Power - 10 Watts Speaker Impedance - 4 Ohm In the Box: Speaker w/speaker wire Mounting bracket Instruction manual *Sold as an Individual 

40W Loud Hailer Horn with Swivel Bracket Gets your point across with up to 40 watts power handling capacity. This speaker also supports a loud-hailer listen-back function. It is made of high impact white plastic and includes a tilt mount bracket. Features: Measures 7″ wide x l3″ deep 8-ohms, 40 Watts @ 400 Hz Frequency Response: 250 Hz to 8 KHz Operating temperature range: –40 to +176 degrees F (–40 to +80 C)

15W 4-Ohm 5" Loud Hailer Speaker with Bracket & Talkback - White Shakespeare marine speakers are rated from 5W to 40W power, covering radio output and hailer/listen-back applications. All are engineered to withstand the rigors of the marine environment. HS-5A Hailer Horn Speaker is made with a durable plastic weather-proof construction. 5” with 15 watts, this hailer is compact but efficient. Specifications: Size: 5" 4-Ohm Max Power: 15W

VLH-3000A 30W Dual Zone PA/Loud Hailer/Fog w/Listen Back & 2 Optional Intercom Stations Features: 30W PA/Hailer output with Listen Back Dual Zone - Forward, Aft or Both 6 Preprogrammed Fog Signals: Underway, Stop, Sail, Tow, Anchor and Aground Horn and Siren Noise canceling microphone with dedicated CALL, IC1 and IC2 keys Compatible with MLS-300 and MLS-310 (10W amplified) external audio speakers Compatible with optional MLS-300i intercom speaker with Push-to Alert button for IC1 and IC2 Flush Mount capable with optional MMB-84 Adjustable Backlight 3 Year Waterproof Warranty

LH5000 Loudhailer 30W Your safety needs perfect communication The Furuno LH5000 is a powerful Loud Hailer designed to immediately draw attention to your vessel by amplifying your voice, or any of eight internationally acknowledged warning signals, through the horns. The LH5000 allows you to instantly notify nearby vessels of your presence and status regardless of limited visibility conditions, such as thick fog or dark of night, that might otherwise mask your presence. Using up to six powerful horn speakers with an impressive output power of 30 watts each, the LH5000 is sure to capture the attention of anyone in your proximity. Up to 6 Intercoms for onboard communications and public address The LH5000 can also be connected to onboard intercom speakers. Because the Intercom feature is a completely separate function of the LH5000, you won't have worry about the impressive warning signals being transmitted through the dedicated two-way intercom speakers! The LH5000 can also gather distant sounds and amplify them through its built-in speaker. This feature, called Listen Back, is incredibly useful for the pilot to hear voices from the docks, deck, or even other nearby vessels. Other features include Siren Mode, which can be connected to the vessel's fire detection systems, and an Alarm Mode, which is very useful when it comes to theft detection. You can even connect a CD player or Radio to play high-volume audio through the horns and intercom speakers. Features Two (2) 30 Watt hailer output channels (FWD & AFT) Up to six (6) 5 Watt remote intercom stations, allowing two-way communication between master & individual remote station, or all stations, simultaneously Bright LCD with user-programmable intercom names for easy operation Built-in high quality speaker for intercom & hailer listen capability Eight (8) automatic fog/warning signals Manually controlled hailer warning signals External speaker output & alarm siren capability Flush mount ready (includes gasket and cutout template) Fully waterproof (IP67) main unit, microphone & optional intercom speakers Auxiliary Audio Input (i.e. music or another audio source) can be transmitted throughout all connected hailers and intercoms This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

FM4800 VHF Radio with AIS, GPS & Loudhailer  Marine VHF Radiotelephone with Class D DSC, GPS Receiver, AIS Receiver and Simplified Loud Hailer  The FM4800 is a marine VHF radiotelephone with built-in Class D DSC, GPS Receiver, AIS Receiver, and Simplified Loud Hailer with intercom. Its compact housing enables it to be installed in a variety of craft, even vessels where space is limited, such as center-console boats. The unit can be mounted on its lightweight bracket, either desktop or overhead, or it can be flush mounted. The FM4800 shares a common appearance with other Furuno equipment, such as NavNet TZtouch2, NavPilot 711C, and the FI70 Instrument series, offering an integrated appearance to any helm. With its built-in GPS receiver, the FM4800 does not require an external GPS source to enable its DSC functionality. The unit can be used as a backup source of GPS positioning for other onboard electronics. Its built-in AIS Receiver can be used to overlay AIS targets with networked GPS Plotters or MFD's, such as NavNet TZtouch, NavNet TZtouch2, or GP1871F/GP1971F combo units. Built-In GPS, DSC & AIS  An existing GPS source can be connected to the FM4800, and it can share its own GPS, DSC and AIS information via NMEA0183 or NMEA2000. When connected via NMEA2000 to any NavNet TZtouch2 MFD, DSC calling can be initiated directly from the TZtouch2 MFD by simply tapping on the AIS/DSC target and selecting [DSC Call]. Additionally, when MOB (Man Overboard) is activated on a TZtouch2 MFD, the FM4800 enters a special mode where you can initiate a distress call by simply pushing the rotary knob. Loud Hailer, Intercom & Listen Back Features The FM4800 can operate as a simplified Loud Hailer with intercom, featuring 8 patterns of alert sounds. Loud Hailer, Fog Horn and Warning Signal features are all available, enhancing onboard safety and communications while navigating in the dark or fog. When connected with the second-station handset, intercom communications are available, allowing communications between the two devices. Additionally, the horn speaker can be used to collect external sounds and transmit them through the built-in speaker with a function called Listen Back. In this way, a person on the deck can easily communicate with the bridge, a particularly useful feature for a variety of fishing vessels and workboats. The Listen Back function can also be an effective tool on sport fishing vessels, allowing the horn speaker to collect the sound from fishing rods and lines when you get a strike. Features: NMEA2000 Certified VHF, AIS Receiver, 30-Watt Loudhailer, GPS & Remote DSC Simplified installation thanks to its pigtail cables & "5-in-1" configuration Dual-station operation w/optional HS4800 full-function remote (up to 30 meters) Single NMEA2000 connection for backup GPS/AIS Receiver/Remote DSC  Outputs NMEA0183 Position, AIS and DSC data to legacy equipment IP67 waterproof transceiver, microphone, handset (option) & speaker (option) Cosmetic match to TZtouch2 for consistent "family" look when flush mounted Multiple mounting options (Desktop, Overhead, Flush Mount) Initiate DSC calls directly from TZtouch2 MFDs (version 6.01 software) This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

FM4850 Black Box VHF Radio with GPS, AIS, DSC & Loudhailer The Ultimate 5-In-1 Tool of VHF Radios The FM4850 is a marine Black Box VHF radiotelephone with built-in Class D DSC, AIS Receiver, and Simplified Loud Hailer with intercom. Its compact housing enables it to be installed in a variety of craft, even vessels where space is limited, such as center-console boats.The FM4850 handset shares a common appearance with other Furuno equipment, such as NavNet TZtouch2, NavPilot 711C, and the FI70 Instrument series, offering an integrated appearance to any helm. Its built-in AIS Receiver can be used to overlay AIS targets with networked GPS Plotters or MFD's, such as NavNet TZtouch, NavNet TZtouch2, or GP1871F/GP1971F combo units. Built-In DSC & AIS  An external GPS antenna can be connected to the FM4850, and it can share its own GPS, DSC and AIS information via NMEA0183 or NMEA2000. When connected via NMEA2000 to any NavNet TZtouch2 MFD, DSC calling can be initiated directly from the TZtouch2 MFD by simply tapping on the AIS/DSC target and selecting [DSC Call]. Additionally, when MOB (Man Overboard) is activated on a TZtouch2 MFD, the FM4850 enters a special mode where you can initiate a distress call by simply pushing the rotary knob on the handset. Loud Hailer, Intercom & Listen Back Features The unit can operate as a simplified Loud Hailer with intercom, featuring 8 patterns of alert sounds. Loud Hailer, Fog Horn and Warning Signal features are all available, enhancing onboard safety and communications while navigating in the dark or fog. When connected with the second-station handset, intercom communications are available, allowing communications between the two devices. Additionally, the horn speaker can be used to collect external sounds and transmit them through the built-in speaker with a function called Listen Back. In this way, a person on the deck can easily communicate with the bridge, a particularly useful feature for a variety of fishing vessels and workboats. The Listen Back function can also be an effective tool on sport fishing vessels, allowing the horn speaker to collect the sound from fishing rods and lines when you get a strike. Features: NMEA2000 Certified VHF, AIS Receiver, 30-Watt Loudhailer, GPS*, Remote DSC & Multi-Station Intercom Up to 3-stations w/optional HS4800A full-function remotes (up to 30 meters) Single NMEA2000 connection for backup GPS*/AIS Receiver/Remote DSC  Outputs NMEA0183 Position, AIS and DSC data to legacy equipment IP67 waterproof transceiver, handset & speaker Simple installation thanks to its robust metal & waterproof black box design Initiate DSC calls directly from TZtouch2 MFDs (version 6.21 software) *Built-in GPS Receiver requires optional GPS Antenna, such as the GPA017 This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Marine Communication Equipment and Components If you need new communication equipment for your boat, you have come to the right place. With a wide selection of communication supplies and marine communication equipment, we can help you find what you need and get back out on the water enjoying yourself. The right marine communication supplies and accessories are important, and we carry top brands such as Shakespeare, Standard Horizon, ICOM, Speco-Tech, ACR Marine, Raymarine, Furuno, and Cobra Electronics. Price ranges and options vary, so you can select the choice that fits your needs and budget.   Whether you need antenna mounts & accessories, a digital antenna, or related parts, we have the antennas and accessories for them that you are looking for. We also offer a number of CB radios, cellular amplifiers, loud hailers, hailer horns, and mobile broadband options, so you can stay connected in a number of ways. Having different options to reach out to people can bring peace of mind in a serious situation, and can also just help you have more fun while you are out enjoying the waterways. With single side band, VHF - fixed mount, and VHF - handheld options, along with satellite telephone brands to choose from, we give you what you need in order to stay connected.

GX2400B Black VHF/AIS Integrated GPS/AIS/NMEA 2000 with 30W Hailer Power, Performance, Reliability! Featuring the GX2400 Matrix AIS/GPS/NMEA2000. NMEA2000 Plug and play NMEA 2000 interface. The integrated NMEA 2000 supports all PGN's for Navigation, GPS, AIS and DSC function. Simply plug the NMEA 2000 into your existing network to complement your system with full VHF and DSC features. Wireless Second Station RAM4W capability Wirelessly control all radio functions of the GX2400 with the interface of the RAM4W wireless Remote Access Microphone. Using the SCU-30 Wireless Access Point plugged into the back of the radio, you have the capability of syncing up to 4 RAM4W units. With an operating range of up to 65 feet, the RAM4W allows you to control all Radio functions including DSC Calling, Position Polling, Group Calling and more, or use the RAM4W to intercom between the main station or between other wireless RAM4W units. Built In AIS Receiver The GX2400 Matrix AIS/GPS/NMEA2000 displays AIS target information (MMSI, Call Sign, Ship Name, BRG, DST, SOG and COG) on the large front panel display. Having this information allows you to contact an AIS Ship directly using DSC, shows your vessels position in relation to AIS targets and alerts you when an AIS ship may be approaching too close to your location via the Closest Point of Approach (CPA) Alarm. Integrated 30 Watt PA / Loudhailer Powerful 30 Watt integrated PA system with Loudhailer and listen back capabilities. Switch to fog horn mode to select any of the preprogrammed fog signals, with siren and horn features. For added benefit, the last selected VHF channel can still be monitored when in the PA or Fog modes. Integrated Voice Scrambler Loaded with an internal 32 code voice scrambler for private communications. the 32 code scrambler is compatible with all Standard Horizon 4 code scramblers already in use. Simply select a channel to be scrambled then select a common code between the transmitting and receiving radios and your communications are secure. Features: NMEA2000 and NMEA0183 Compatible Built-in Speaker in Microphone Handset Second station capability with wired RAM4 or wireless RAM4W (when used with the optional SCU-30 WiFi Module) Built-in integrated 66 channel GPS receiver Integrated 32 Code Voice Scrambler and 4 Code Voice Scrambler Noise canceling function for both receive and transmit audio Meets ITU-R M.493-15 Class D (Digital Selective Calling) Separate Receiver for CH70 (Receiving DSC Calls) AIS/AIS SART target display: MMSI, Call Sign, Ship Name, BRG, DST, SOG and COG E2O (Easy to Operate) Icon & Menu System Preset key stores up to 10 favorite channels Intercom Feature between the Radio and an Optional Second Station Programmable Scan, Priority Scan, and Multi Watch DSC position request and report functions GPS Compass, Waypoint and GPS status pages Enter, Save, and Navigate to a waypoint using the Compass page Navigation (LAT/LON, Time, SOG and COG) information is shown on display Programmable CPA (Closest Point of Approach) or TCPA (Time to Closest Point of Approach) alarms Commercial grade receiver (Spurious & Image rejection better than –80dB) 30 Watt PA/Loud Hailer with programmed fog signals and listen back GM (Group Monitor) Using DSC Group position Calling MOB (Man over Board) Operation Excellent Visibility with Busy LED Indicator Selectable Night Mode Display NOAA Weather Channels with Weather Alert

  In regions that aren’t fortunate enough to have good weather for boating all year round, Memorial Day signals the start of the sailing season. Be ready. Tune up, pump up, and polish!   Check your safety equipment, lines, hoses, and sails. Get ready to launch.   Here are a few handy tips to make your boating season run smoothly.   Paperwork Get your boating paperwork updated and in order. Permits, registration, decals, certificates, and licenses must be up to date. The Coast Guard, Marine Police, and the Conservation authorities may stop you and board your vessel to check for up-to-date permits and equipment. It is an excellent time to review your boater’s insurance policy. Check to see if your situation has changed and if you need additional coverage. Then, submit your paperwork as early as possible to avoid fines.    Onboard Systems Replace the oil filter and lubricate all parts; lower-case should be free of oil leaks Electrical systems such as fuses, spark plugs, and wires should be checked and adequately replaced Empty your fuel tank and refill it with fresh fuel and fuel treatments Flush the water tank Fully recharge your battery and fill the cells with distilled water All lines should be checked Inspect the propeller for damage or fishing line Check that hull is free of blisters and cracks The engine anode must be inspected every three months or less.  Replace boat anodes once a year.  Check your outboard anode yearly.  Check your prop shaft anode monthly.  Check the hydraulic steering system for proper fluid levels, leaks, and tilt Inspect the steering, shift, and throttle cable Check and change all of the fluid levels as appropriate, including engine oil, power steering, and coolant   Communication Clean all screens on GPS, VHF radio, chart plotters, and fish finders. Replace any batteries with fresh new ones. Check wires and fuses. Check and repair antenna mounts, speakers, and mics. Test communication equipment while tied to the dock.   Having a variety of communication options, according to CLR Marine VHF radios, cellular amplifiers, loud hailers, hailer horns, and mobile broadband options - helps you stay connected in a number of ways. “Having different options to reach out to people can bring peace of mind in a serious situation, and can also just help you have more fun while you are out enjoying the waterways."    Trailer If trailering your boat, pay special attention to wheel bearings, tires, and brake lights.   Dock Lines Check all dock lines for chafing and fraying. Better to replace than repair.   Safety Equipment Flares, throw cushions, life jackets. The intense sun can do a number on cushions and life jackets, and flares and fire extinguishers must be current before expiration. The Coast Guard, marine police, and conservation law enforcement take out-of-date safety equipment very seriously, and they enforce heavy fines if you are non-compliant.   Don’t forget the Docks Check all dock lights and electrical fittings for loose wires. Docks should have an emergency shut-off switch for electricity on the docks.   You will have a fun-filled boating experience if all of your equipment is clean and well maintained.   Fair Winds, Smooth Sailing ---------------------------------------------------------------------------------------------------------- Award-winning author Cheryl Kuba has been at the helm for more than 30 years sailing the Great Lakes, with side trips to the British Virgin Islands and St. Maarten. In addition, she has served as a past-Commodore of Great Lakes Fleet 21 - Chicago region. ©Copyright Cheryl Kuba, 3happycampers.com, 2022.  

Watch the Weather.   Even the best-laid plans for the perfect boating outing can be turned upside down by Mother Nature. Watch the sky. Know what to look for in clouds. Be very conscientious about spotting lightning. It never hurts to know as much as you can about the weather. Courses are available at local colleges and online on what to look for in the sky and plan for weather fronts that can change on a dime.   The odds of your boat being struck by lightning are about one in 1,000. However, your odds are skewed, depending on your location. If you are in Montana, you have good chances that it won't happen, but in a popular boating state like Florida, surrounded by water, you will have less luck. One-third of the country's lightning insurance claims are filed in Florida.     According to William J. Becker, University of Florida IFAS Extension, in a report for the National Association of State Departments of Agriculture, NASDA, Florida averages more than ten deaths and thirty injuries from lightning per year. Approximately fifty percent of the deaths and injuries occur to individuals involved in recreational activities. Nearly forty percent of those are water-related: boating, swimming, surfing, and others.   Sailboats are more likely to be struck than powerboats because lightning is attracted to the mast. In the powerboat category, trawlers are struck more than other powerboats.   What is Happening When Lightning Strikes?   Becker describes it as, "The upper portion of the cloud develops a positive electrical charge, the lower level a negative electrical charge.  Because it is a poor conductor of electricity, the air restricts the regular flow of electricity between these, attracting electrical charges. While this phenomenon is occurring in the clouds, a similar event is occurring on the surface. Negative charges repel negative charges and attract positive charges. So, as a thunder cloud passes overhead, a concentration of positive charges accumulates in and on all objects below the cloud. Since these positive charges are attempting to reach the negative charge of the cloud, they tend to accumulate at the top of the highest object around. On a boat that maybe the radio antenna, the mast, a fishing rod, or a person!"   Lightening makes its own Schedule.   While you can take steps to lessen the damage lightning will cause, you can't prevent a strike.   What happens when your boat is Struck?   NOAA, the National Oceanic and Atmospheric Administration, www.noaa.gov., estimates a strike contains around 30,000,000 volts. Your boat's electronics are most susceptible to damage. Most 12-volt electronics will be damaged, if not all, electronics on your vessel.   At times, the strike will hopscotch around the boat, and collateral damage occurs when a nearby vessel gets hit, either the result of the lightning's powerful electromagnetic field or the current induced by the field running through the boat's shore-power cord. Some electronics will be damaged; others will not. Check your compass. There may be no external damage, but the compass heading significantly affected.   Precautions to Reduce Personal Injury and Damage from Lightening.   When a thunderstorm of any kind is approaching, whether lightning is present or not; Get everyone out of the water – scuba divers, swimmers, jet skiers, and stop any fishing activities. Stay in the center of the cabin of the boat. Keep arms and legs in the boat.    There is no such thing as a boat being lightning proof, but you can take steps to make your vessel lightning protected. Most pleasure craft are made of fiberglass or wood, not providing the automatic grounding protection offered by metal-hulled craft. When lightning strikes a small boat, the electrical current is searching for any route to ground, including the human body, an excellent conductor of electricity.     Major lightning protective equipment includes an air terminal, main conductor, and a ground plate. Secondary components are secondary conductors, lightning arrestors, lightning protective gaps, and connectors. Lightning arrestors and lightning protective gaps are used to protect radios and other electronic equipment, which are subject to electrical surges.   If a sailboat mast is made of conductive material, a conductor securely fastened to the mast and extending six inches above the mast and terminating in a receiving point, or a radio antenna can serve as the air terminal.   Captain Chuck Reed, and his wife, Linda, sailed their 36' Catalina sailboat from Detroit to the Caribbean and lived aboard for three years. Reed, the owner of CLR Marine, used a shaft saver on Silent Dream to to keep the boat totally ungrounded, and also save the prop shaft if a line got wrapped around it. Yes, it did save the prop shaft one time and being totally ungrounded he feels that it did save them from the lightning. The Reeds encountered many thunderstorms that included lightning, their boat did not suffer any damage due to lightning.   The National Fire Protection Association, Lightning Protection Code   For a more detailed summary of how to protect your boat from a lightning strike, refer to the National Fire Protection Association's Lightning Protection Code. www.nfpa.org.   Shaft Savers are available at https://www.clrmarine.com/462m4/marine-hardware/shaft-couplers.html    Watch the weather. Stay safe.    Fair Winds and Smooth Sailing   To obtain more information about the products and services mentioned in this article, please contact CLR Marine https://www.clrmarine.com/.   ----------------------------------------------------------------------------------   Award-winning author Cheryl Kuba has been at the helm for more than 30 years sailing the Great Lakes, with side trips to the British Virgin Islands and St. Maarten. She has served as past- Commodore of Great Lakes Fleet 21 -Chicago region. 3happycampers.com ©Copyright Cheryl Kuba, 3happycampers.com    

CLR Marine will now be stocking portable satellite phones and accessories by Iridium and Inmarsat. Stay in touch and be connected anywhere, anytime! They are found at http://www.clrmarine.com/462m4/communication/satellite-telephone.html

25W Commercial Grade Fixed Mount VHF with NMEA 2000 & Integrated AIS Receiver NMEA 2000 Plug and play NMEA 2000 interface. The integrated NMEA 2000 supports all PGN's for Navigation, GPS, AIS and DSC function. Simply plug the NMEA 2000 into your existing network to complement your system with full VHF and DSC features. Wireless Second Station RAM4W capability Wirelessly control all radio functions of the GX6000 with the interface of the RAM4W wireless Remote Access Microphone. Using the SCU-30 Wireless Access Point plugged into the back of the radio, you have the capability of syncing up to 4 RAM4W units. With an operating range of up to 65 feet, the RAM4W allows you to control all Radio functions including DSC Calling, Position Polling, Group Calling and more, or use the RAM4W to intercom between the main station or between other wireless RAM4W units. Built In AIS Receiver The Quantum GX6000 displays AIS target information (MMSI, Call Sign, Ship Name, BRG, DST, SOG and COG) on the large front panel display. Having this information allows you to contact an AIS Ship directly using DSC, shows your vessels position in relation to AIS targets and alerts you when an AIS ship may be approaching too close to your location via the Closest Point of Approach (CPA) Alarm. Integrated 25W PA/Loud Hailer The Quantum GX6000 includes a 25W Loud Hailer with Fog signals; Bells and Whistles with listen back. For added benefit, the last selected VHF channel can be heard when in the PA or Fog modes and the AIS Display may be accessed and used. In addition, the Quantum GX6000 allows you to start a fog horn and then view the AIS page simultaneously. Integrated Voice Scrambler Loaded with an internal 32 code voice scrambler for private communications. the 32 code scrambler is compatible with all Standard Horizon 4 code scramblers already in use. Simply select a channel to be scrambled then select a common code between the transmitting and receiving radios and your communications are secure. Features: Integrated AIS Receiver** Built-in Speaker in microphone handset AIS / AIS SART target display: MMSI, Call Sign, Ship Name, BRG, DST, SOG and COG NMEA2000 and NMEA0183 compatible Programmable CPA and TCPA collision avoidance alarms Dual Zone 25W PA / Loud Hailer with preprogrammed fog signals and listen back GPS Compass, Waypoint and GPS status pages E2O Easy to Operate menu system Oversized rotary channel knob with push to enter Front panel microphone can be connected to rear panel and extended 20 feet using MEK-4 mic extension kit Capable of connecting two optional RAM4 or four Wireless RAM4W Integrated Voice Recorder to play back up to two minutes of RX receive audio Advanced 80dB Commercial Grade receiver with Local / Distance Attenuator Integrated 32 Code (FVP-42) and 4 Code (CVS2500A) Voice Scramblers Overall Dimensions 6.9"W x 4.3"H Flush-Mount Dimensions 6.2"W × 3.7"H × 6.2"D 3 Year Waterproof Warranty **Requires a separate dedicated AIS antenna