Click links below to download or print PDF Instructions:
Liftmaster Sears Chamberlain Remote Control Transmitter 81LM Instructions
Please note: "Wayne Dalton" Models 100-320 were actually manufacturer by Liftmaster for Wayne Dalton. For support on these units, your best option would be to contact Liftmaster direct. www.Liftmaster.com also has been helpful resources under their customer support for these models and their associated parts.