Chamberlain CLSS1 Quick Start Manual Download Page 1

MODEL CLSS1 AND CLSS1-P

GARAGE DOOR OPENER 

SURGE PROTECTOR

OWNER’S INSTRUCTIONS:

The Garage Door Opener Surge Protector is designed to protect garage 
door openers against damage from lightning and power surges. The Surge 
Protector will stop radiated surge currents from coming through wall 
control and safety sensor wires, as well as surge currents from coming 
through AC power line according to the rating chart shown below.

Plug the Surge Protector into grounded (3-wire) 120V AC outlet within four 
(4) feet of the garage door opener. Plugging Surge Protector into a GFCI 
(Ground Fault Circuit Interrupter) is acceptable, but not recommended as 
power surges may cause the GFCI to trip and you will need to reset the 
outlet in order to operate the garage door opener.

To prevent possible SERIOUS INJURY or DEATH from electrocution:
•  Unplug Garage Door Opener from AC outlet and be sure power is disconnected BEFORE installing the Surge Protector.
•  Connect terminals ONLY to 24 VOLT low voltage wires.
•  The Surge Protector is ONLY for indoor Use.
•  DO NOT perform installation during a lightning storm (visible lightning)

BEFORE YOU BEGIN:

It is recommended that you label wires prior to 
removing them from the garage door opener. 
Label safety sensor wires and wall control wires 
using color codes if applicable.

INSTALLING THE WALL CONTROL WIRES:

  At the garage door opener, remove the wall 

control wires from opener terminals, noting 
polarity and/or wire color positions.

•   Since these wires will now be routed to the 

surge protector, use the 5’ piece of white-
white/red 24 AWG bell wire (included) as 
EXTENSION from surge protector to opener.

•   Note polarity/wire colors, twist original wire 

with extension wire together, and insert 
into surge protector. The terminals colored 
red and white on the surge protector are 
designated for the doorbell button/wall control 
wires.

•   Attach wires to opener terminals in same 

order/ color combination as original 
installation. (Consult owners manual if 
necessary).

INSTALLING THE SAFETY SENSOR WIRES:

•   At the garage door opener, remove the safety 

sensor wires from opener terminals, noting 
polarity and/or wire color positions.

•  Since these wires will now be routed to the 

surge protector, use the 5’ piece of white-
white/black 24 AWG bell wire (included) as 
EXTENSION from surge protector to opener.

•   Note polarity/wire colors, twist original wire 

with extension wire together, and insert 
into surge protector. The terminals colored 
white and gray on the surge protector are 
designated for the IR sensor wires.

•   Attach wires to opener terminals in same 

order/ color combination as original 
installation. (Consult owners manual if 
necessary).

INSTALLING THE SURGE PROTECTOR:

•   Plug Surge Protector into AC outlet
•   Plug garage door opener into outlet on front 

of Surge Protector

•  Test garage door opener for proper operation. 

Be sure to test all functions including wall 
control, keypad, safety sensors (Door 
Reversal Test - See garage door opener 
manual for instructions) and any other 
accessories.

NOTE: 

After completing installation and restoring 

power to the garage door opener, check 
illumination of safety sensor LED’s (located on 
safety sensors).

If not illuminated, the wires for the safety 
sensors may be crossed at the Surge Protector.

Follow these steps:

1.  Unplug Surge Protector and garage door 

opener from AC outlet.

2.  Verify that the safety sensor wires are 

connected to the gray and white terminals 
on the Surge Protector. If not, re-wire Surge 
Protector following above instructions.

3.  If connected to the gray and white terminals 

and LED’s are still not illuminated, disconnect 
the twisted wires from both gray and white 
terminals and switch positions. Ensure they 
are making a good connection within the 
terminals of the Surge Protector.

4.  Reconnect AC power to both Surge Protector 

and garage door opener.

LED Indicator: 

The indicator light should be 

illuminated when the surge protector is plugged 
into AC power and is protecting your garage 
door opener system. If the indicator light goes 
out, the surge protector has sacrifi ced (depleted) 
itself to protect the garage door opener system 
and should be replaced immediately.

To protect the door opener low voltage control wires from lightning damage, control wires will be rerouted from the door opener to the surge protector, 
continuing the connection to the door opener. This protects the opener’s control wiring.

NOTE: 

The Chamberlain Garage Door Opener Surge Protector is not recommended to be installed with garage door openers manufactured by 

Marantec America Corporation or Hoermann, Inc. USA.

Chamberlain warrants to the original purchaser of 
any Chamberlain Surge Protector that the surge 
protector shall be free of defects in material and 
workmanship for a period of one (1) year from 
the date of original purchase, and will repair 
or replace, at its option, any defective surge 
protector free of charge. The proper operation of 
the Chamberlain Surge Protector may destroy the 
protector itself. Such an event is not a defect and 
is not covered by this limited warranty.

For a period of one (1) year from the date of 
original purchase of any Chamberlain Surge 
Protector, Chamberlain will provide up to $100 
to repair or replace, at its option, damaged 
garage door opener parts or components 
(“Connected Equipment”) which is damaged 
by a transient voltage surge (an “Occurrence”), 
while properly connected through a Chamberlain 
Surge Protector to a properly wired AC power 
line with protective ground. This limited warranty 
is null and void unless all wires leading into 
the equipment pass through an appropriate 
Chamberlain Surge Protector as further described 
herein. Chamberlain reserves the right to review 
the damaged Chamberlain Surge Protector, the 
damaged Connected Equipment and the site where 
the damaged occurred. All costs of shipping the 
Chamberlain Surge Protector and the damaged 
equipment to Chamberlain for inspection shall 
be borne solely by the purchaser. Damaged 
equipment must remain available for inspection 
until the claim is fi nalized. The Chamberlain 
Surge Protector is not intended for use with any 
product(s) other than Connected Equipment.

If you wish to make a warranty claim, please 
call 800-528-9131 for instructions. You will 
need your receipt for the Chamberlain Surge 
Protector. All above warranties are null and void 
if the Chamberlain Surge Protector in use during 
the occurrence is not provided to Chamberlain 
for inspection upon Chamberlain’s request at 
the sole expense of the purchaser, Chamberlain 
determines that the Chamberlain Surge Protector 
has been improperly installed, altered in any way 
or tampered with, Chamberlain determines that 
the damage did not result from the occurrence 
or that no occurrence in fact took place, or 
Chamberlain determines that the Connected 
Equipment was not used under normal operating 
conditions or in accordance with all labels and 
instructions.

All Chamberlain Surge Protectors must be plugged 
directly into the power source and must not be 
“daisychained” together in serial fashion with 
other power strips, UPS, other surge protectors 
or extension cords. Any such installation voids 
the limited warranty. This limited warranty only 
protects against damage to properly connected 
equipment where Chamberlain has determined, in 
its sole discretion, that the damage resulted from 
an Occurrence, and does not protect against acts 
of God such as fl ood, earthquake, direct lightning 
strike, war, vandalism, theft, normal-use wear 
and tear, erosion, depletion, obsolescence, abuse, 
damage due to low voltage disturbances (i. e. 
brownouts or sags), non-authorized program or 
system equipment modifi cation or alteration. This 
warranty is secondary to any existing coverage 

of any Connected Equipment, including, but not 
limited to, any manufacturer’s warranty, extended 
warranties or insurance coverage.

THIS LIMITED WARRANTY IS IN LIEU OF ANY 
OTHER WARRANTIES, EXPRESS OR IMPLIED, 
INCLUDING ANY IMPLIED WARRANTY OF 
MERCHANTABILITY OR FITNESS FOR A 
PARTICULAR PURPOSE, OR OTHERWISE, AND 
OF ANY OTHER OBLIGATIONS OR LIABILITY 
ON SELLER’S PART. THIS LIMITED WARRANTY 
DOES NOT COVER NONDEFECT DAMAGE, 
DAMAGE CAUSED BY IMPROPER INSTALLATION, 
OPERATION OR CARE (INCLUDING, BUT NOT 
LIMITED TO ABUSE, MISUSE, FAILURE TO 
PROVIDE REASONABLE AND NECESSARY 
MAINTENANCE, UNAUTHORIZED REPAIRS 
OR ANY ALTERATIONS TO THIS PRODUCT), 
REPLACEMENT OF BATTERIES AND LIGHT 
BULBS OR UNITS INSTALLED FOR NON-
RESIDENTIAL USE.
UNDER NO CIRCUMSTANCES SHALL SELLER BE 
LIABLE FOR CONSEQUENTIAL, INCIDENTAL OR 
SPECIAL DAMAGES ARISING IN CONNECTION 
WITH USE, OR INABILITY TO USE, THIS 
PRODUCT. IN NO EVENT SHALL SELLER’S 
LIABILITY FOR BREACH OF WARRANTY, 
BREACH OF CONTRACT, NEGLIGENCE OR 
STRICT LIABILITY EXCEED THE COST OF THE 
PRODUCT COVERED HEREBY. NO PERSON IS 
AUTHORIZED TO ASSUME FOR US ANY OTHER 
LIABILITY IN CONNECTION WITH THE SALE OF 
THIS PRODUCT.

Chamberlain Connected Equipment Limited Warranty

Safety 

Sensors

To IR sensor 
input connectors

Inser

t

Insert

Wires

Red

White

White

Gray

2

2

3

Garage Door

SAFETY SENSORS

KG

1

3

9

7

5

KG

1

3

9

7

5

Garage Door Opener

LIGHT

LOCK

Wall

Control

3

Door

Bell

or

To wall control
input connectors

Wall

Control

FOR TECHNICAL SUPPORT, DIAL OUR TOLL FREE NUMBER:  (USA) 1-800-528-9131, www.chamberlain.com

RATING CHART / TECHNICAL SPECIFICATIONS

Energy Dissipation:  ___________________________________ 761 joules
Protection Indicator Light: ____________________________________Yes
Catastrophic Surge Circuit:  ___________________________________Yes
Thermal Fusing: ____________________________________________Yes
Line Voltage:  __________________________________ 120 VAC, 50/60Hz
Maximum Surge Current: ____________________________________16kA

Maximum Surge Voltage: _____________________________________6kV
Line Current:  _____________________________________________ 15A
Power: ____________________________________________ 1800 Watts
UL1449 Suppression Rating: ________________________________ 800V
Protection Modes: __________________________________L-N, N-G, L-G

Valid only in the USA and Canada.

Printed in China

114A2915B 

http://www.chamberlain.com 

© 2017, All Rights Reserved The Chamberlain Group, Inc.

WARNING:

 This product can expose you to chemicals including lead, which are known to the State of California to cause cancer or birth defects or 

other reproductive harm. For more information go to 

www.P65Warnings.ca.gov

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