ITEM NAME:8-Pin Dtmf Modular Plug Remote Lapel Speaker Mic For Id-880H Ic-2200H Ic-2300H Description: WORKS WITH HM-133V IC-2200H/2300H/2800H ID Series: ID-800H ID-880H IC Series: IC-E880 IC-2720H IC-2725E IC-208H IC-E208 IC-207H IC-2800H IC-2820H IC-E2820 Replacement for HM-133V Remote control microphone.It supports extensive remote operations of the radio including VFO select, Up-Down tuning and memory select. DTMF(Dual Tone Multi Frequency) function will open the radio's squelch only when it receives a DTMF code that matches one pre-programmed into your receiver. Each tranceiver is normally programmed with a unique code. It is backlit for low light.It is backlit for low light conditions. This mic plugs into a modular jack on the front of the radio. WORKS WITH HM-133V IC-2200H/2300H/2800H ID Series: ID-800H ID-880H IC Series: IC-E880 IC-2720H IC-2725E IC-208H IC-E208 IC-207H IC-2800H IC-2820H IC-E2820.