3 channel mini key-chain transmitter, operates up to three devices
Slim line, perfect for pocket, purse or motorcycles - 2.5" by 1"
390 Mhz frequency
100 Billion codes with code rotating technology
Lithium battery (5 years life w/normal use) included
Compatible with ALL Security+ systems, including Chamberlain, Sears, Craftsman and Raynor code rolling residential openers (Safety Signal), compatible with models manufactured from 1997-present