Works on these Code Alarm systems: CA135, CA145, CA160, CA545, CA645, CA670, CA670A. Battery is included inside remote. The FCC ID of the remote is ELVATDB. It has 5 buttons and transmits at 434MHz. This is a Code Alarm Type 7 Transmitter so it can be used to replace or can be replaced by the following: S1BTXA, CATX420, CATX4TW, PROTX6, CATX520, CATX510, UTXPR, 5BLCTX, CATX500, DIYTX, 5BLETX, UTXC, CATXSS, and CATX610.