Lift-master 300LM User Manual

UNIVERSAL RADIO CONTROL

The receiver may be installed in one of two ways: 1. attached to an inside wall of the garage with connecting bell wire (not supplied). 2.
mounted directly on the door opener with clips provided.

NOTE With transformer, use a 2-wire connection ONLY. Attach wire to
receiver terminals 1 and 2 and to the opener terminals used for push
button control. Plug transformer into receiver and 120 Volt outlet as
shown.

Side 2 contains installation and service information as well as code setting instruction for models with transmitter(s).

Lift-Master

The Professional Line

Model 300LM

Receiver Only

F.C.C. rules prohibit adjustments to or modificatioin of receiver and/or transmitter circuitry except for changing the code setting and replacing the
transmitter battery. THERE ARE NO USER SERVICEABLE PARTS.

Manufactured under 1 or or more of the following us. patents: RE29,525; 4,037,201: 4,750,118: 4,846,930

MODEL 85 TRANSFORMER MAY BE REQUIRED IF YOUR GARAGE DOOR OPENER IS A BRAND OTHER THAN
LIFT-MASTER, CHAMBERLAIN OR SEARS.

INSTALL THE RECEIVER OUT OF THE REACH OF CHILDREN. DO NOT ALLOW CHILDREN TO OPERATE RECEIVER OR
TRANSMITTER(S). SERIOUS PERSONAL INJURY FROM A CLOSING GARAGE DOOR MAY RESULT FROM MISUSE OF THE
OPENER.

When Installing two or more receivers in a garage, position them at least 10 feet apart to prevent electronic interference.
NOTE: Models 300-1LM and 300-2LM are factory pre-set with matching receiver and transmitter codes.

CAUTION: Do not attempt to open the receiver

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back panel THERE ARE NO USER SERVICEABLE PARTS.

Model 300-1LM

(With 1 Transmitter)

Model 300-2LM

(With 2 Transmitters)

MOUNTING RECEIVER ON OPENER

Fully extend antenna wire below bottom of case as shown.

Loosen the two receiver terminal screws labeled 1 and 2. Insert one end of
a mounting clip under each terminal. Make sure the clips are positioned to
clear the receiver flange, as shown. DO NOT RETIGHTEN AT THIS TIME.

Loosen the two opener terminal screws used for the push button control.
These terminals should also be marked 1 and 2.

Leaving the push button bell wire in place, insert the other ends of the
mounting clips under the opener temminal screws. If the number
sequence of opener terminals doesn't match the receiver, turn the receiver
around (so back Is facing out) and complete the connection.

NOTE Terminals 1 and 2 on the receiver MUST be connected to terminals
1 and 2 on the opener.

Retighten the terminal screws on opener and receiver. Reconnect power
to the opener The receiver push bar should light. If it doesn't light and your
opener has three terminals, use the third mounting clip to connect receiver
terminal 3 to opener terminal 3.

If the receiver push bar still doesn't light, you must use Transformer Model

85.

NOTE: With the transformer, use a 2 wire connection ONLY. Attach
mounting clips to receiver terminals 1 and 2, and to the opener
terminals used for push button controls. Plug the transformer Into
the receiver as shown and into a 120 Volt outlet.

MOUNTING RECEIVER ON GARAGE WALL

Fully extend the antenna wire below bottom of case as shown.

Fasten the receiver to an Inside garage wail with wood screws provided. A
convenient place is alongside the service door and OUT OF THE REACH
OF CHILDREN.

Use existing bell wire, if desired. Attach one end of 2-strand wire to
receiver terminals 1 and 2. The other end must be connected to the two
opener terminals which are used for the push button control. Use insulated
staples to secure bell wire between receiver and opener.

Reconnect power to the opener. The receiver push bar should light. If it
doesn't light and the opener has three terminals use a third strand of bell
wire to connect receiver terminal 3 to the third opener terminal.

If the receiver push bar still doesn't light, use Transformer Model 85.

THE TRANSMITTER

KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION

1 41A3593 Transmitter case (housing only) 4 300LM Universal Receiver
(Circuit board NOT INCLUDED)
2 10A14 12V Battery 5 85 Transformer Accessory
3 329C128 Visor clip
NOT
SHOWN Model 61LM Extra Transmitter (Complete)

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Printed in Mexico

The portable transmitter may be secured to a car sun visor with the
clip provided. Additional transmitters can be purchased at any time
for use in all vehicles using the garage. New transmitters must be
set to the same code as original transmitter. Follow code setting
procedures below.

The transmitter is equipped with a battery check light. When the
push button is pressed, the light will glow if the battery has power
(and the opener will operate).

The 12 Volt battery should produce power for at least a year. When
the light is dim or doesn't come on, replace the battery. If the
transmission range lessens, check the battery light.

TO CHANGE THE BATTERY: Slide the battery compartment
cover down. Remove original battery and position new battery as
directed.

MATCHING/CHANGING THE CODE

SET CODE SWITCHES IN ALL TRANSMITTERS TO MATCHING POSITIONS

1. On the back of the transmitter(s) slide the battery compartment cover down to access the code switches.

2. With a pen or a screwdriver, change the setting of one or more switch to a (+), (-) or (0) position.

3. NOTE: Code switches 2 through 9 In ALL transmitters used to operate a receiver must be set to match. (Code switch

1 is neutral. Set it to ANY positlon. It will not affect the code selected).

Match Code

Sidles

SET RECEIVER TO MATCH TRANSMITTER(S) CODE

1. If transformer Model 85 is connected to the receiver, unplug
transformer from the wall.

2. Pry open the front panel of receiver case with a coin or
screwdriver.

3. Press the "Smart" actuator on the receiver. as shown. The
indicator light alongside will turn ON.

4. STAND AWAY FROM DOOR and press the transmiter push
button. The actuator indicator light will turn OFF and the door will
move. Code setting is now complete and the opener will operate
when either the wall push button or the transmitter push button is
pressed. Return cover to receiver.

NOTE: If the transmitter push button is not pressed within 30
seconds, the receiver indicator light will turn OFF. Repeat
Steps 1 and 2.

114A1207