2 pin Soft rubber D-ring Earpiece Earphone Headset PTT(Push To Talk) with built-in line mic microphone for Radio Security Door Supervisor 2pin.Design by Big Speaker Unit, Clip this hands free earpiece onto your shirt and begin using your radio device to communicate discretely and easily, whether you're in security, retail, or hospitality.Built-in line microphone and push-to-talk button. The earbud fits snugly in the ear with easy and keeps your conversations private.Excellent for use in police, , nightclubs, bars, , security, restaurants, hotels, bouncer, warehouses, and noisy environments.Compatible with two way radios walkie talkie that required 2 pin plug. Including CLS Series, XTN Series, P100 Series, Series, DTR Series, P Series, PRO Series, XTN XU Series, XTN AX Series, Spirit Series, Spirit MU Series, Spirit MV Series, Series, SP Series, CT Series, Series and Other Series: ECP100, EP450, AP10, AP50, AP73,PMR446, MagOne BPR40, AU1200, AV1200.For use with the following 2 way radios and many more that require a dual pin plug approximately 5/16 inch (standard 2 prong )CLS Series: CLS446, CLS1110, CLS1410, CLS1413, CLS1450, CLS1450C, CLS1450CB, CLS1453CH .XTN Series: XTN446, XTN500, XTN600 .XTNi Series: XTNi, XTNiD .P100 Series: P140, P145, P160, P165, P180, P185 . Series: CP88, CP040, CP100, CP110, CP125, CP140, CP150, CP160, CP180, CP200, CP250, CP300DTR Series: DTR2430, DRT2450, DTR410, DTR450, DTR510, DTR550, DTR610, DTR650P Series: P10, P50, P50+, P040, P080, P100, P110, P200, P1225, P1225LS, PR400PRO Series: PRO1150, PRO2150, PRO3150XTN XV Series: XV1100, XV1400, XV2100, XV2600, XV4100XTN XU Series: XU1100, XU2100, XU2600, XU4100XTN AX Series: AXV5100, AXU4100Spirit Series: SV10, SV11, SV11D, SV21, SV12, SV22, SV22C, SU210, SU22, SU22C, SU220, Spirit, Spirit Pro, Spirit Pro+, Spirit HP10Spirit MU Series: MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24CVSTSpirit MV Series: MV11, MV11C, MV11CV, MV12, MV12CV, MV21C, MV21CV, MV22, MV22CV, MV24CVS Series: GP63, GP68, GP88, GP88S, GP280, GP300, GP308, GP350, GP600, GP2000, GP2100, GP3188SP Series: SP10, SP21, SP50, SP50 PlusCT Series: CT150, CT250, CT450, CT450LS Series: RDV-5100 RDV5100, RDV2020 RDV-2020, RDV2080D RDV-2080D, RDU2020 RDU-2020, RDU2080D, RDU-2080D, RDU4100, RDU-4100, RDU4160D,RDU-4160DOther Series: ECP100, EP450, AP10, AP50, AP73,PMR446, MagOne BPR40, AU1200, AV1200Colour: Blackmaterial: plasticPackage Contents:10 X 2Pin EarpieceOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.