A transformer is sometimes required for powering a radio receiver when there are no connections on the garage door opener to power the radio receiver. The Liftmaster 85LM power adapter plugs into a standard outlet to power the Liftmaster radio receiver.
Compatible with the following Liftmaster radio receivers:
850LM Liftmaster Commercial Universal Radio Receiver, 412HM Liftmaster Coaxial Receiver, 312HM Liftmaster Coaxial Receiver, 422LM Liftmaster 2-channel Receiver, 423LM Liftmaster 3-channel Receiver
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