All products feature selectable frequencies: HDRC, 300 MHz and 390 MHz. All transmitters feature signalLock that will guarantee the radio signal is transmitted every time a switch is activated. CP/TX-R4 comes complete with transmitter, integrated signal enhancing antennas, wire harness and 9V battery installed in an MS Sedco 1025 surface mounting box. Compatible with 6" round activation switches.

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