Linear ACT-31B: 1-Channel Block Coded Key Ring Transmitter

Designed for use with Linear’s access control products. The Model ACT-31B is a single-channel device supplied with a quick-disconnect key ring. Also included are lithium batteries with a five-year service life. A unique 10 second time-out feature prevents the system from being shut down by a single transmitter transmitting continuously. Factory block is coded in MegaCode format, RF frequency: 318 MHz