This remote has been discontinued. There is a receiver box above the drive unit R240 or somewhere near the ceiling . The external receiver Brand is Shima Digital with 3 wires: AC 24V-White(common)RELAY-Black, RADIO POWER-Red, MAX. INPUT AC 30V Made in Japan. To replace the receiver and the bulk remote is a solution. This Tilt a Matic opener has an external receiver which is installed around the opener or near the garage ceiling.
This remote has been discontinued and upgraded to a conversion kit MK702T, which is composed of one receiver MR433 and two keyring size remotes MK300. All you need to do is to disconnect old three wires and attach the new receiver. All done.
This one has been upgraded to MK702T.