Durable PTT button allows push for hands-free calling; sensitively captures clear and loud sound for transmission* Widely used in noisy environments such as police, nightclubs, restaurants, etc.* The distance between the two pins: 5mm.Compatible with Motorola radio:Compatible models:Fit For MotorolaGP series:GP2000, GP2100, GP3188, GP3688, GP280 GP300, GP308, GP63, GP68, GP88, GP88S, GP600CP series:CP88, CP040, CP100, CP125, CP140 CP150, CP160 CP180 CP185 CP200, CP250, CP300 CP200XLS,CLS series:CLS446 CLS1110, CLS1410, CLS1413, CLS1450, CLS1450C, CLS1450CB, CLS1450CH, CLS1453CB CLS1453CH.Spirit Series:MU series: MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24CVSTMV series: MV11, MV11CV, MV12, MV12CV, MV21C, MV21CV, MV22, MV22CV, MV24CVS.SU series: SU210, SU22, SU22C, SU210, SU220 VHF / UHF Spirit, Spirit Pro, Spirit Pro+SV series: SV10, SV11, SV11D, SV21, SV12, SV22, SV22C,X series:XV series: XV1100, XV1400, XV2100 XV2600 XV4100XU series: XU1100 XU2100 XU2600, XU4100XTN series: XTN446, XTN500, XTN600AX series: AXV5100, AXU4100,DTR series:DTR550, DTR650, DTR410, DTR450, DTR510, DTR550, DTR610, DTR650, DTR2430, DTR2450.RDX series:RDU2020, RDU2080D, RDU4100, RDU4160D,RDV2020, RDV2080D, RDV5100,SP series:SP10, SP20, SP50, SP50+P series:P10, P50, P50+, P040, P080, P100, P110, P200, P1225, P1225LS,CT series:CT150, CT250, CT450, CT450LS,PRO series:PRO1150, PRO2150, PRO3150other series:GTI, GTX, GTX Portable, GTX LTR Portable, GTX Privacy Plus Portable,AU1200, AV1200, AP10, AP50, AP73, VL50, VL130, ECP100 EP450,PR400, PMR446, Mag One BPR40, PTX600, LTS2000,