Liftmaster Replacement remote control 3 button transmitter works with liftmaster, sears, chamberlain residential garage door openers using 315Mhz frequency. HomeLink compatible. Original factory replacement part. Color: Black, 3 volt lithium battery, part #373LMWorks with all Liftmaster, Sears and Chamberlain garage door openers, utilizing the 315 Mhz frquency. Works with garage door openers that have a purple programing button and yellow indicator light. Works with Liftmaster models 3850, 3595, 3585, 3575, 3280, 3265, 3240, 3255, 3245, 3130, 1355, 1345Remote Control Transmitter, 3 volt lithium battery, visor clip, programming instructions, manufacturers original packaging, Manufactuers 1-year Warranty