Linear ACT-21B - 1-Channel Block Coded Key Ring Transmitter (minimum 10) Doorking 1834 install easier

install easier

10 temporary access codes

This is an indoor unit and is not waterproof

making them ideal for heavy continuous cycle gates

white button

Linear ACT-21B - 1-Channel Block Coded Key Ring Transmitter (minimum 10) Doorking 1834 install easierCLICK HERE FOR MANUAL Linear ACT 21B 1 Channel Block Coded Key Ring Transmitter ***Sold in multiples of 10 only*** The Linear ACT 21B 1 Channel Block Coded Key Ring Transmitter is designed for use with Linears access control products. The Linear ACT 21B 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 timeout feature prevents the system from