Lift-Master The Professional Line Single-Function 2-Channel Remote Control Transmitter Model EMT 5 op L Remote Control Transmitter Model 6th Hof M SAMPLE INSTRUCTIONS Multi-Function Remote Control Transmitter Model Goth ECL. rules prohibit adjustments to or modification of receiver candor remote control transmitter circuitry except for changing the code setting and replacing remote control transmitter battery. THERE ARE NO OTHER USER SERVICEABLE PARTS. Manufactured undo 1 of more of the following U.S.