Clifford GARAGE DOOR INTERFACE User Manual

ongratulations on your purchase of the 3-Door Programmable Garage Door
Receiver with ACG (Anti-CodeGrabbing™). You can use your existing

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Clifford ACG remote control(s) to individually command up to 3 separate garage
door openers and/or electric gate(s) (note: this product will not work with older
Clifford remote controls). You can even use the same remote control to command
various low-voltage devices in your home (such as a home security system) as well
as control Clifford ACG vehicle security system(s) and accessories on your
automobile(s).

What is code-grabbing?

Your existing garage door remote control transmits the same digital code every
time you press the button. So thieves now use a code-grabber, a device that
literally records, from hundreds of feet away, the code sent by your garage door
transmitter. When you have left, they just use the code-grabber to retransmit the
code and activate your garage door opener.

Thieves have been using this same code-grabbing technology to disarm car
alarms. So Clifford Electronics, the world leader in auto security technology,
developed Anti-CodeGrabbing: ACG. Clifford’s ACG remote controls NEVER
transmit the same code twice. Each time you use your Clifford ACG remote
control, it randomly changes the code.

How to connect the 3-Door Programmable Garage Door
Receiver to your garage door opener(s)

1. Unplug the power cord(s) of the garage door opener(s).

2. If the opener uses an external receiver module, disconnect its terminals as

shown in diagram 1.

3. If the opener uses an internal receiver module, perform the Detuning the

Opener’s Receiver

4. Mount the 3-Door Programmable Receiver above the garage door as shown

in diagram 1.

NOTE: Do not mount the receiver module over or near metal. Doing so
will reduce remote control range.

procedure on page 3.

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5. For Garage Door #1: Connect one of the three supplied brown, twin-lead
wires to the two screws under the “1” on the 3-Door Programmable Receiver.

NOTE: Keep all wires away from the garage door and drive mechanism.

6. Attach the other end of the twin-lead wire to the same screws used for the
interior push button control, as shown in diagram 1.

7. If you wish to control a second or even a third garage door with the same
receiver, repeat steps 5 and 6 for garage door opener #2 and #3 using the two
screws noted for opener #2 and #3 on the 3-Door Programmable Receiver.

8. Plug the AC adapter into a wall outlet and plug its connector into the bottom
of the 3-Door Programmable Receiver.

NOTE: Keep the cord away from the garage door and drive mechanism.

9. Reconnect the garage door opener’s power cord.
Attach the supplied whip antenna to the connector on the 3-Door

10.

Programmable Receiver.

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Detuning the electric garage door’s existing receiver

Skip this section if your garage door opener has an external receiver or
if your garage door opener never had a remote control.

The garage door opener’s original receiver must be disconnected or “detuned” to
make it impervious to “scanners.” (Burglars use scanners to rapidly transmit one
garage door remote control code after another, often activating the garage door
opener in a matter of seconds. Unless you detune the existing receiver, your
garage door opener will still retain the original remote control code and will open
the door when a scanner transmits that code.) To detune a garage door receiver,
perform the following:

1. Unplug the garage door opener’s power cord.

2. There are two types of receivers: external and built-in. If your opener uses an
external receiver, you should have already disconnected its terminals as part
of the installation procedure (page 1, step 2).

3. If your garage door opener does not have an external receiver, you must
detune its built-in receiver. Near the garage door opener’s antenna wire, you
will find its tuning device(s). You may need to remove the opener’s outer
housing in order to access the circuit board.

4. Most receivers use “tuning slugs.” It may be necessary to poke through a
decal in order to gain access to the tuning slug holes (as illustrated in
diagram 2).

• On some openers, the tuning slugs may be located on the exposed printed

circuit board (diagram 3).

• Use the supplied tool to turn the inner core counterclockwise until it can

be removed (diagram 4).

• If the receiver uses a “tuning capacitor,” use a screwdriver to turn the

screw 1/4-turn in either direction (diagram 5).

• On a Genie “Genius” type opener, peel back the label on the circuit board

and rotate the screw a quarter-turn in either direction (diagram 6).

5. Reconnect power to the garage door opener and activate the

original

control. The opener should NOT respond. Repeat steps 1-5 for garage
door/gate openers #2 and #3, if applicable.

remote

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