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Universal Radio Control

OWNERS MANUAL

With 

SECURITY

the code between the remote control and

the receiver changes with each use, accessing over 100 billion
new codes.

You can activate your opener with several 

SECURITY

remote

controls (with yellow indicator lights) utilizing up to 8 functions,
and one 

SECURITY

Keyless Entry.

Transformer Model 85 may be required if your garage door
opener is a brand other than Lift-Master, Chamberlain or
Sears.

NOTE: 

Model 335-2LM is factory pre-set with matching

receiver and remote control codes.

IMPORTANT: For maximum security and range, you must
disable the existing radio on your opener, otherwise it
could still activate your opener:

• If there is an external receiver, disconnect power to it.

• If it is an integrated receiver, either clip off the component

that feeds power to the receiver 

or 

remove the tuning slug

and antenna from the receiver section.

• If you have a Lift-Master, Sears or Chamberlain opener with a

“SMART” receiver, erase the old codes by holding down the
Smart button for 6 seconds until the indicator light turns off.

• If you have code switches, reset them to a random code

and deactivate the receiver by removing the tuning slug
and antenna.

THE RECEIVER MAY BE INSTALLED IN ONE OF TWO WAYS:

1. Mounted directly on the door opener with clips provided as

shown on page one.

2. Attached to an inside wall of the garage with connecting bell

wire (not supplied) as shown on page two.

When installing two or more receivers in a garage, position
them at least 10 feet apart to prevent electronic interference.

MOUNTING RECEIVER ON OPENER

Fully extend antenna wire below bottom of case as shown.

Loosen the two terminal screws on the receiver (labeled 1 and
2). Insert one end of a mounting clip under each terminal.

Do not retighten at this time.

Loosen the two terminal screws on the opener used for the
push button control.

Leaving the push button bell wire in place, insert the other ends
of the mounting clips under the opener terminal 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 the push button terminals on the opener.

Model 335LM Security

Receiver Only

Model 335-2LM Security

(With 2 Remote Controls)

Children operating or playing with a garage door
opener can injure themselves and others. 

The garage

door could close and cause serious injury or death. 

Do

not allow children to operate the push buttons or the
remote control transmitters.

Install the receiver (and any additional push buttons)
out of the reach of children and away from all moving
parts of the door and door hardware, but 

where the

garage door is visible.

A moving garage door could injure someone under it.

Activate the opener only when the door is properly
adjusted, you can see it clearly, and there are no
obstructions to door travel.

WARNING

CAUTION

WARNING

WARNING

Disconnect power to the garage door opener before
installing the receiver.

WARNING

CAUTION

WARNING

WARNING

To Outlet

Model 85

Transformer

OPENER

TERMINALS

Receiver

Terminals

Antenna Wire Fully Extended

Mounting

Clip #1

Mounting

Clip #2

Mounting

Clip #3

Common

Push Button

Radio Power

©

To comply with FCC/IC rules, adjustment or modification of receiver and/or
transmitter is prohibited, except for changing the code setting and replacing the
transmitter battery. THERE ARE NO USER SERVICEABLE PARTS.

NOTICE TO U. S. CONSUMERS:

Some states prohibit the service or repair of garage door openers which
cannot be made to comply with the safety standards contained in UL
325 (1988 revision). In order to comply with both the letter and the spirit
of these laws, this universal radio control should not be used with any
Lift-Master

®

, Chamberlain

®

, or Sears Craftsman

®

garage door opener

manufactured prior to April 1, 1982. To find out if your Chamberlain-
made garage door opener was manufactured prior to or after April 1,
1982, please call 1-800-528-9131 before installing this universal radio
control.

Retighten the terminal screws on the opener and receiver.
Reconnect power to the opener. The receiver push bar should
light. If it doesn’t light and your opener has a radio power
terminal, 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 the 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.

Side 2 contains wall mounting instructions and code setting
instructions.

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