Linear ACT-21A 318MHz MegaCode 1-Channel Key Ring Transmitter

Linear ACT-21A 318MHz MegaCode 1-Channel Key Ring Transmitter

The Linear ACT-21A 318MHz MegaCode 1-Channel Key Ring Transmitter is easy to use and simple to install and program. It gives you the protection you need over a million codes and is compatible with 318MHz Linear access receivers and controllers.  This one-channel transmitter is wireless and has a unique 10-second time-out feature prevents the system from being shut down by a single transmitter transmitting continuously. This transmitter comes with an LED indicator that lets you know when it is working and can be easily attached to your keys or carried in your pocket or purse.