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Alert System Type
Garage Door Alert
Car & Garage Product Type
Garage - Door Control
Sensor Type
Tilt Switch
Garage Openers
Battery Operated
Ease of Installation
Beginner (Installs < 10 minutes)
Chamberlain Group
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Receive Instant Visual Indication if Garage Door is Left Open

Chamberlain CLDM1 Universal Garage Door Monitor
Chamberlain CLDM1 Universal Garage Door Monitor
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Universal Garage Door Monitor Universal Garage Door Monitor Installation Diagram
Chamberlain CLDM1 Universal Garage Door Monitor
Item# 7168M
Price: Normally $29.99 
Hot Deal $18.53
Free shipping on orders over $50 - See Details


  • Sensor is triggered when the door is open
  • Easy-to-read monitor provides visual indications
  • Wireless range up to 50 feet
  • Fast, easy installation, no tools required

Essential Info

The Universal Garage Door Monitor works with any overhead garage door. Mount the sensor to the back of your garage door with the included Velcro strip. When the door opens, the sensor moves into the horizontal position and sends a signal to the monitor that the door is open. The monitor then provides simple, visual cues to indicate your garage door's status. When the light flashes red, the door is open; when the green light is on, the door is closed.


What's Included

  • 1x - Sensor
  • 1x - Indoor Receiver
  • 1x - AC Adapter
  • 1x - 3 Volt Lithium Battery (CR2032)
  • 1x - Velcro Strip
  • 1x - Installation Instructions
  • Specifications


    Manufacturer Product No.:CLDM1
    Dimensions:Sensor: 2 3/4" x 1 5/8" x 3/4"; monitor: 3 3/4" x 2 1/2" x 1 1/4"
    Receiver Power:12V DC, 50 mA
    Transmitter Power:1 lithium battery
    Battery Life:1 year
    Operating Temperature:Sensor: -18° F to 140° F (-25° C to 60° C); receiver: 14° F to 122° F (-10° C to 50° C)
    Transmitter Codes:254 randomly set codes
    Receiver Codes:Learns codes of up to 4 transmitters
    Approvals:FCC compliant

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Chamberlain Group, Tel: (800) 323-2276


    Universal Garage Door Monitor  Universal Garage Door Monitor Installation Diagram     
    Universal Garage Door Monitor  Universal Garage Door Monitor Installation Diagram     


    101 Ratings
    5 star: 62%  (63)
    4 star: 17%  (17)
    3 star: 4%  (4)
    2 star: 6%  (6)
    1 star: 11%  (11)
    Average Customer Rating
    (101 customer ratings)
    Share your thoughts with other customers
    MICHAEL -- laurel, MD   7/5/2014
    works great!
    Victor -- vancouver, BC   5/31/2014
    I've had this unit for a couple of years now. It has saved my bacon a few times! Once in a while it flashes red/green so I remove from door, reorient it and its fine till next time. I wish it had a audible tone to go along with red indicator.
    LAWRENCE T -- manhattan, IL   5/15/2014
    works as advertised
    PAMELA -- montrose, CO   4/25/2014
    This monitor is working well, may it continue to do so. It is my third one, same model. It is so convenient to know my garage is closed without walking out front to see, or to walk out and have the door open as I expect it to be. Thank you!
    Won't be fooled again -- harrisburg, PA   4/25/2014
    Am on my 2nd one. First one died after a few months--tried new battery just kept blinking between green & red.Thought it was just bad luck since Chamberlain has a excellent garage door opener. WRONG. 2nd one died yesterday after maybe 4 months. Same thing-tried new battery-same results keeps flashing between red & green. Don't waste your money.
    EDWARD -- plano, TX   4/22/2014
    Works like it's supposed to. Liked it so much I ordered one for my neighbor. She likes it a lot.
    EDWIN -- winchester, CA   3/8/2014
    The item arrived quickly and without any issues.
    HJS -- United States   1/12/2014
    Got it yesterday. Installed sender with screws and was ready to go in less than 10 min. It's served it's purpose twice so far. Ain't the prettiest but I'm forced to look at it as a reminder every time I walk past the dining room. For the price this may potentially save me thousands. A+++
    CAROL LEE -- lakeland, FL   1/9/2014
    Excellent service, fast delivery, great product
    MyName -- Virginia   10/24/2013
    initially worked well. but with the passing time begun to eat batteries faster and faster. looks like the sensor cannot handle to heat on the garage door, and the transmitter frequency drifts.
    InfoDiva -- Connecticut   8/27/2013
    The thing lasted two weeks on the garage door. It fell off and of course I didn't realize that until I had driven over the thing. Simply junk.
    PAUL -- levittown, NY   8/11/2013
    Don't waste your time or money. Worked for the first few hours then flashed an error signal. Tried all trouble shooting. Still no good. Exchanged for another unit which did the same thing.
    PAUL -- levittown, NY   7/20/2013
    Very simple to install. Green light for closed door and red for a open door. Occasionally both lights flash. Don't know why. Double face tape that was supplied is useless. Sender kept falling off of the door in the hot weather. Not a big deal. Just had to put a few screws in to secure it to the door.
    RC -- maricopa, AZ   5/17/2013
    Great product, quickly shipped and received. Minus 1 star for the garage door mounting. . .in 100 degree Arizona heat, the glue melts and the sensor hits the floor. Needs a "hard" mount cradle.
    Mike -- Calif   5/1/2013
    it would be better if it had a buzzer or something when ever it changed from closed to open along with the light.
    ANNE -- woodstock, IL   3/3/2013
    Easy to install and works it.
    TIM -- westfield, XX   2/21/2013
    This is a simple but usful device. I always got upstairs and wondered if the garage doors were shut, now have this next to my bed and no more trips downstairs.
    ROBERT G -- indianapolis, IN   2/1/2013
    product works as advertised. sticky tape is unsatisfactory to attach to garage door. Product should have provision for screws to attach it.
    DEB -- phoenix, AZ   1/22/2013
    excellent device! easy to install. brings peace of mind knowing that the garage door is shut at night and not having to go downstairs and check. thank you!
    FRANK -- meriden, CT   12/16/2012
    This product does exactly what is was advertised to do. It was easy to install and was the best value I could find anywhere. I even ordered an additional sensor for my second garage door and was very satisfied. I keep an extra remote garage opener in the house and can open and close the doors as needed without ever going outside. It solves an age old problem at a great price.


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