MOTOROLA HKLN4601 Dual Pin Surveillance Kit With In-Line Microphone, Push-To-Talk Button, For Use With CLS, CP, DTR, RDU, RDV, RMM, RMU, RMV and DLR Two Way Radios, Black

This enhanced one-wire surveillance kit features an in-line microphone and push-to-talk, providing transmit and receive capabilities in a streamlined, single-wire design.