Model 641M Multi-Function Mini Transmitter F.C.C. rules prohibit adjustments to or modification of receiver and/or THE Processional Line Lift-Master Owners Manual transmitter circuitry except for changing the code setting and replacing transmitter battery. THERE ARE NO OTHER USER SERVICEABLE PARTS. Manufactured under 1 or mare of the following LL.S. patents: REZ8,525; 4.037 201: 4,750,118; 4,808 880 -Other Patents Pending MATCH THE CODE IN NEW Remove the cover screw in NEW transmitter.
