Technical Specifications Attribute Details Manufacturer CITIZEN Model M5 Product Category Transceiver Mic Wiring Pin 1 – Mic Audio Pin 2 – RX Pin 3 – Shield / Ground Pin 3 – Switch Line Pin 5 – TX / PTT

Technical Specifications Attribute Details Manufacturer CITIZEN Model B524 Product Category Transceiver Mic Wiring Pin 1 – Mic Audio Pin 2 – RX Pin 3 – Shield / Ground Pin 3 – Switch Line Pin 5 – TX / PTT

Technical Specifications Attribute Details Manufacturer CITIZEN Model M2 Product Category Transceiver Mic Wiring Pin 1 – Mic Audio Pin 2 – RX Pin 3 – Shield / Ground Pin 3 – Switch Line Pin 5 – TX / PTT