HD400 Behind the Head Headset with Vented Left Side Dome

HD400 Behind the Head Headset with Vented Left Side Dome
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Model: HD400


HD400 Behind the Head Headset with Vented Left Side Dome



      • Slotted left dome

      • Balance and comfort
      • Radio transmit PTT
      • M65S microphone







• Impedance: 150 ohms


M-65 Electret Noise Canceling Mic (Amplified)

• Frequency Range: 100-17,000 Hz


• Frequency Response: 3-8,000 Hz

• Sensitivity: 101dB with 1mW Input


• Mic Source Resistance: 220-2200 ohms

• Volume Control Range: 7~100%


M-70 Electret Noise Canceling Mic
(Non Amplified)



• Frequency Response: 100-10,000 Hz



• Mic Source Resistance: 680 ohms




• Certified NRR 24 dB


• Tensile Reinforced Copper Wiring

• Water Resistant Switches


• Polyurethane Insulation (UV Safe)

• Domes: High Impact ABS Plastic


• Boom Type: Full Flex Boom

• Dome Colors: Red, Black or Yellow


• Detachable Cords with Lock-in

• 1 Year Factory Warranty





Hd Headsets design utilizes detachable cords with positive-lock connectors. This feature allows the headset to connect with virtually all major brands of safety intercoms. The secret is the unique jack design built into the ear dome(s) and the independent detachable cord that simply plugs into the headset and radio.Avcomm EasyLink™ Detachable Cords

If your safety fleet vehicles have different brands of intercoms, simply select the compatible cord for each system, plug it in and you are ready to work. Do you prefer the cord connection on the right or left side? Simply unplug and reconnect to the other side.

This exclusive feature provides versatility, allowing you to connect the cord to either ear dome, as well as provide "quick fix" capability since you can easily replace the cord, and not the whole headset. The last thing you want to worry about when your headset needs service is how long it will take to get back. Now, simply replace the cord in seconds and you're back to work.

Designed for the extreme demands of professional fire/safety personnel, HD Headsets Fire/Safety Headsets expertly combine performance and comfort for unsurpassed communications.

All of HD Fire/ Headsets have been certified 24db NRR to meet the needs of today's professionals.

The full flex boom provides precise microphone placement for easy positioning even with gloves on and swings away for extra convenience. The noise-canceling electret microphone eliminates unwanted background noise while amplifying desired voice signals so you can be heard more clearly.

Safety Headsets feature cushy soft oversized acoustic foam ear seals. 
HD400 Features a fully adjustable Velcro® head strap and a rugged spring steel back band for a secure fit under a helmet.

Because HD headsets feature detachable cords, users can take their own headset with them easily and connect/disconnect as needed. This is an affordable way to reduce the spread of pathogenic viruses caused by shared headsets since the headset and cords are sold separately. In addition, Avcomm mic muffs are hypoallergenic and completely washable for maintaining hygienic usage.

Rugged cables with durable polyurethane insulation and spiral shielding to reduce RF interference, a highly reliable electret noise canceling mic for excellent sound quality, a full flex boom for easy positioning even with gloves on, volume control, and a choice of three colors for personal identification or Department preference.

Features and Benefits:

  • Convenient volume control featured on all models
  • The ear cups are manufactured from high impact ABS plastic for tensile strength, chemical and heat resistance. They are easy to clean with liquid household detergent. In addition, both ear domes swivel and rotate to provide a perfect custom fit.
  • All HD Fire/Safety Headsets are backed by a 2-year factory warranty

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