Compatible with Harris Tait TP8100, TP8110, TP8115, TP8120, TP8135, TP8140, TP9300, TP9310, TP9355, TP9360, TP9400, TP9435, TP9440, TP9455, and TP9460 Two Way Radios. Because portable radio communications are critical, the Sheepdog-T8QD police mic earpiece is equipped with a Dual-Switch Technology (DST) push to talk.
eBay