Features:
2 pin D Shape Earpiece Earphone Headset PTT(Push To Talk) with built-in line mic microphone for Midland Alan Radio Security Door Supervisor 2pin.
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.
The earbud fits snugly in the left or right ear with easy and keeps your conversations private.
Provides excellent durability, reliability and performance in low-profile environment.

Applications:
Relevant personnel: police, military, bouncer, and businessman
Related sites: nightclubs, bars, paintball, security, restaurants, hotels, airports, casinos, manufacturing plants, conventions, concerts, warehouses, and noisy environments
Two-pin standard diameter: Ear 3.5mm stereo (top pin). Mic 2.5mm stereo (bottom pin)
Space of two-pin: Approx.11mm
Color: Black
Length: Approx. 1m
Applicable Models: Almost All The brand two way radio of China
Compatible devices:

for Kenwood KPG

KPG27D, KPG29D,KPG48D, KPG49, KPG55D, KPG56D, KPG62D, KPG66D, KPG69D, KPG70D,KPG74D, KPG75D, KPG77D, KPG82D, KPG87D

for Kenwood TH

TH-D7, TH-D7A, TH-D7AG, TH-D7E, TH-F6, TH-F6A, TH-F7, TH-F7E, TH-G71, TH-G71A, TH-G71E, TH-K2, TH-K2A, TH-K2E, TH-K2ET, TH-21, TH-21AT, TH-21BT, TH-22, TH-22A, TH-22AT, TH-22E, TH-25, TH-26, TH-27, TH-28, TH31AT, TH31BT, TH41AT, TH41BT, TH-42, TH-42A, TH-42AT, TH-42E, TH-45, TH-46, TH-47, TH-48, TH-55, TH-75, TH-77, TH-G71, TH-205, TH-215, TH-225, TH-235, TH-235A, TH-235E, TH-315, TH-415

for Kenwood TK

TK-208/308,TK-220/320,TK-240/340,TK-240D/340D,TK-248/348, TK-250/350/353, TK-260/360,TK-260G/360G,TK-270/370, TK-270G/370G,TK-272G/372G/373G,TK-278G/378G/388GPro-Talk,TK-430/431, TK-2100/3100Pro-Talk,TK-2102/3102,Pro-Power,TK-2107/3107,Pro-Talk,TK2207,TK3207,TK-2160/3160

for BAOFENG

Almost All: UV5R, BF-480/490/320/V6/V7/V8/658/520/530/999/888/777/666S/777S/888S

for HYT

TC286 386 2685 3865 6685, TC 278 378 388, TC 2100 2088

for WOUXUN/for PUXING/for QUSHENGAN/for LINTON/for TYTet

Almost All with a two pin plug, former pin diameter of 3.5 mm and 2.5 mm in diameter after pin, double pin from 8 mm within,11 mm center distance of 2 pin.