MTS2000 Motorola BDN6676B: Motorola BDN6676, Motorola BDN6676D, Black Audio Adapter 3.5mm jack with PTT(push to talk) switch is on the adapter. With Quick Disconnect Latch. FM Approved. This adapter is required for many different headset or surveillance earpieces, microphones that plug into adapter jack.......... Fits: HT1000, JT1000, MT2000, MTS2000, MTX8000, MTX9000, XTS3000, XTS3500, XTS5000, MTX838, MTX-LS, PR1500, Saber I R, Saber II R, XTS1500, XTS2500. NOTE: For ordering purposes, the ALPHA letter after the stock number is not listed......... THIS ITEM IS INTRINSICALLY SAFE ONLY WITH FOLLOWING RADIOS: ASTRO Digital XTS 3000, XTS 3500, XTS 5000, HT1000, JT1000, MT2000, MTS2000, MTX8000, MTX838, MTX9000, and MTX-LS.