User manual LIFT-MASTER 420LM

[. . . ] Lift-Master The Professional Line SPECIFICATIONS Output Rating. . . . . . . . 3 Amps 120VAC or DC Max. Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V to 35V, @ 30ma RF Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390MHz If the power is other than shown in specifications, Accessory Transformer Model 85 is required. Model 86 Coaxial Cable Kit is also available. [. . . ] FIGURE 1 -- WITHOUT TRANSFORMER: Connect bell wire (not supplied) to receiver terminals 1 and 2, and to opener radio power terminals. Also connect bell wire to receiver terminal 4 and opener terminal 2. Make a jumper wire connection to receiver terminals 1 and 3 as shown. FIGURE -- WITH TRANSFORMER MODEL 85: Receiver terminals 1 and 2 are not used. Connect bell wire to receiver terminals 3 and 4 and to opener terminals used for push button controls. The transformer plugs into 120V outlet. Side 2 contains code setting instructions, as well as instructions for changing output duration and voltage setting. SET RECEIVER TO MATCH REMOTE CONTROL(S) CODE Use a screwdriver to pry open the receiver cover as shown. Press and HOLD the new remote control push button. Thenpress the "Smart" button on the receiver. The adjacent indicator light will flash. The opener will now operate when the remote control push button is pressed. NOTE: If the remote control push button is not held down until the receiver indicator light flashes, the receiver will not learn the code. To Erase all Remtote Control Codes · Press and hold the "Smart" button on the receiver panel until the indicator light turns off (about 6 seconds). All the codes the receiver has learned will be erased. · Repeat Steps 1 and 2 to reprogram the receiver for each remote control transmitter in use. [. . . ] The jumper must be in the 24V position for use with 24V, and in 12V position for use with 12VDC. The jumper must be set to the proper voltage to avoid damage to the receiver. The receiver is factory set at 24V. 114a1526G © 1994, Chamberlain Group, Inc. [. . . ]