Impact M1-PBM-1 Bone Conduction Earpiece, Motorola 2-Pin Bone Conduction How they work: The filter

How they work: The filter uses the accelerated resonant decay principle to convert sonic energy into thermal energy by means of compression acceleration

professional grade listen only surveillance kit with acoustic tube

Also featuring a micro MEMS (Micro Electrical-Mechanical System) surface-mount Knowles mic inside an incredibly small mic casing

Includes a mini-inline volume switch

Includes 2 Push-to-Talk (PTT) options: a remote finger PTT (FPTT-1) and an inline cable switch

Impact M1-PBM-1 Bone Conduction Earpiece, Motorola 2-Pin Bone Conduction How they work: The filterImpact PBM 1 Surveillance Kit with Bone Conduction Ear Piece and 2. 5mm Jack. This 1 wire surveillance kit with inline Push to Talk (PTT) and 2. 5mm audio accessory port is a bone conduction earpiece that allows the user to hear (Rx) and transmit (Tx) through a single earpiece without the need to speak directly into a microphone. A great solution for noisy environments such as concerts, sporting events, nightclubs and festivals. Includes 2 Push to