61lm Stinger Garage Door Opener Remote Liftmaster Sears Craftsman Chamberlain

STINGER 61LM (390LMD21V) LIFTMASTER 61LM COMPATIBLE ONE BUTTON REMOTE. Manufactured by Transmitter Solutions. Compatible with LiftMaster 61LM One Button Remote. Works with all older LiftMaster Chamberlain , Sears , Raynor and Craftsman machines that have 9 DIP Switches.