Chamberlain Garage Door Monitor-CLDM1 - The Home Depot
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Model # CLDM1

Internet # 100431671

Garage Door Monitor

Chamberlain Garage Door Monitor

This item has been discontinued.
The Home Depot no longer carries this specific product.

$24.97 / each


Model # CLDM1

Internet # 100431671

This Chamberlain Garage Door Monitor is designed to work with overhead garage doors. It simply installs conveniently without wires. The monitor has a LED indicator which flashes red to alert you when the garage is open.

  • Works with practically any overhead garage door and opener model
  • Monitor can be placed in almost any convenient location in your home
  • Can add to your security and peace of mind
  • Sensor mounts to garage door
  • Monitor and 1 sensor included

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Batteries Included 
Battery Type Required 
CR2032 coin cell battery 
Doors Operated by Remote 
Garage Door Part/Accessory Type 
Garage Door Monitor 
Garage Opener Device Type 
Illuminated buttons/display 
Model/year compatibility 
Motion detecting 
Number of Batteries Required 
Power Source 
Product Weight (lb.) 
.7 lb 
Rolling code technology 
Universal control 
Wired or Wireless 
Warranty / Certifications
Manufacturer Warranty 
1 year warranty 


Rated 4.1 out of 5 by 93 reviewers.
Rated 5.0 out of 5.0 by Neat idea Got one of these things a few months ago. And I love it! Before I got one I would often lay in bed thinking "did I close the garage?" Sometimes I would actually GET OUT OF BED to go check (a very unwelcome task on cold or rainy nights). Installing the transmitter on the garage door was very simple (double sided tape). The base station goes inside and lights up red if door is open, green if it is closed. Its a neat little product and in my opinion well worth the 40 bucks. April 4, 2009
Rated 4.0 out of 5.0 by seems to work well. Not a big fan of the power cord attached to the wall unit. Might have been better to go wireless.Previous reviews have said that battery in the door unit dies prematurely. Seems good for the last week that I have had the unit. We shall see. December 11, 2011
Rated 5.0 out of 5.0 by Great Security for Obscured Garage Doors The garage door monitor by Chamberlain takes minutes to install and gives you the piece of mind you want when you can't see if your garage door is closed or not. For those of us that walk into the house and then think "Did I close the garage door?", this is your solution. The small transmitter mounts quickly and easily to any garage door with the included adhesive "hook and loop" strip. Make sure to install the transmitter with the curved side facing the bottom of the door so the internal motion switch can operate properly. The battery is included, it's a lithium coin cell size 2032. The receiver mounts to any wall using a small screw. It mounts just like a smoke detector. Adjust the flexible wire antenna into an L position to guarantee it can pick up the signal from the transmitter. The receiver has a plug in power pack, so you'll need to install it within six feet of an outlet. Once installed and the receiver is plugged in it automatically picks up the signal from it's matched transmitter. When the door is closed, the light on the receiver base stays solid green. When the door is open, the receiver base will flash red. It takes just a moment to see if you closed your door. My garage is over 50 feet from the receiver and I've had no signal issues. We've had temps near zero lately and it still worked perfectly. I'm glad I got this. No more wandering outside at night to see if I in fact closed the door. One look at the light gives me my answer without ever leaving the house. March 23, 2013
Rated 5.0 out of 5.0 by Chamberlain Garage Door Monitor I park my car, enter via the front door, and then close the garage door from inside. What was happening is that I kept forgetting to close the garage door and leaving it open all night. I wanted something simple and silent to remind me to close the door, and nothing that required an entire alarm system addition (other solutions required sensor to be a piece of an entire monitoring system). The stand-alone Chamberlain was just what I needed. A sensor simply sticks to the garage door and causes the inside monitor light to go green when the door is down, red when it is up. You do have to find power for the inside monitor, but the garage door sensor is battery driven. I rated Quality with four stars only because I haven't had it long enough to see how well it lasts (but I'll buy another just like it when it wears out). January 6, 2015
Rated 1.0 out of 5.0 by Poor Design Great idea, poor design. The sensors work great on the garage doors, but don't transmit very far. This only works in the room closest to the garage. This was not designed by anyone mindful of interior design. The cord and the wire antenna come out of the top, so have to be routed down and around. The power outlet is black, not white. Do you know of any interior walls in America that are complemented by a black, dangling cord? The wire antenna works fine for a garage door opener mechanism, but looks terrible in a house. The LED lights are dim. Too bad this is the only manufacturer who makes such a product that I know of. December 10, 2014
Rated 5.0 out of 5.0 by Works as expected Plug and play. Works.............................. March 14, 2015
Rated 5.0 out of 5.0 by Works as advertised Installed 2 sensors on 2 rollup garage doors, with a single monitor in the house. The sensor needs to be installed at a slight angle to trip the red light as soon as the top section of the door starts to tilt, otherwise that top section has to be almost horizontal before the red light comes on - allowing the door to open further than I wanted. Easy to install and it works great. February 25, 2015
Rated 5.0 out of 5.0 by Excellent product, works as expected. Easy to install. Worked properly first time. Will work on more than one door with extra sensors.. February 17, 2015
  • 2015-05-05T10:39:23.659-05:00
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