Handset for two-way radio, it include handset, adapter, charter. Near-field magnetic (NFMC)-based wireless Noise-canceling mic cleans up voice transmissions Voice-op or push-to-talk features on headset Swivel earpiece rotates 180 degrees for cus... - Update: 2007-11-01

Application scenario: Ordinary interphones, interphones in analog trunk systems, interphones in digital trunk system. Specifications: Modulation scheme: GMSK Voice encoding: ADPCM Power supply: 3V to 8V adapter for interphone, the 3.7V lithiu... - Update: 2007-11-01