SkyLink Wireless Garage Alarm/Alert Set-GM-434RTL - The Home Depot
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Model # GM-434RTL

Internet # 204176719

Wireless Garage Alarm/Alert Set

SkyLink Wireless Garage Alarm/Alert Set

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

$24.99 / each


Model # GM-434RTL

Internet # 204176719

This easy to install Skylink Garage Door Monitor notifies you when a garage door is open with both a piercing 95dB siren, as well as visual indicators. The Main Unit can work with up to 16 sensors in 4 different zones (additional sensors can be purchased separately). This unit has a self contain Supervised Sensor which automatically monitors the sensors and their batteries condition.

  • Notifies you when a garage door is open with both audio and visual indicators
  • Supervised sensor monitors the sensors and their battery condition automatically
  • Main unit works with up to 16 sensors in 4 zones (additional sensors sold separately)
  • Comes with alert and alarm features with built-in piercing 95dB siren
  • Easy to install
  • Package contents: main unit, garage door sensor, cr2032 battery, mounting accessories and adapter

Info & Guides

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Assembled Depth (in.) 
3.38 in 
Assembled Height (in.) 
9.78 in 
Assembled Width (in.) 
7.78 in 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Alarm Sensor Type 
Garage Door 
Alarm Sensor Type 
Garage Door 
Audio Alert/Siren 
Battery Back-Up 
Number of Sensors Included 
Product Weight (lb.) 
.5 lb 
Range (ft.) 
Surveillance Features 
Audio Alert/Siren,Visual Alert 
Surveillance Included 
Visual Alert 
Wired or Wireless 


Rated 3.8 out of 5 by 9 reviewers.
Rated 3.0 out of 5.0 by Skylink Garage Door Monitor It works fine most of the time. You must be sure you are not too far away and the battery is good. Mine was erratic when it was not within about 60 feet but it is going through the garage wall and a car and the kitchen window. I also have the Skylink motion sensor on the front door and it works fine too. February 8, 2014
Rated 5.0 out of 5.0 by Exactly What We Wanted We needed a simple, inexpensive warning/alarm to alert us when the garage door was open. This provided us with the choice of either a loud alarm, or a quieter alert, plus a blinking red light to notify us when the garage door was open. Quick and easy to install and works as indicated. Have had this installed for about a month and am very pleased with the results. Signal is transmitted through garage wall and an interior hallway wall to the receiver which sits in the t.v. room. Even if this only lasts for 6 months to a year, it is so inexpensive I wouldn't hesitate to replace it with the same model. We have had several thefts in the neighborhood because of unattended open garages, so we are now resting a little easier knowing we will be made aware when the garage door is open. Would definitely recommend this. May 5, 2015
Rated 5.0 out of 5.0 by Garage Alarm works well. Easy to install and set up. Works as advertised. Thinking of buying another detector. May 12, 2015
Rated 5.0 out of 5.0 by prompt delivery excellent product easy to install,works as described and is exactly does what I wanted. March 25, 2015
Rated 4.0 out of 5.0 by garage door monitor Battery it came with died in a week after the install. It doesn't work in the distance it said it should. We had to place it closer to garage door instead of the room we wanted to use it in. But, it does let us know that garage door was left open. Would have been totally happy with it if I hadn't had to pay for a new battery and it would have worked in bedroom. January 27, 2015
Rated 5.0 out of 5.0 by This thing is awesome! I have a neighbor who is always forgetting to close her garage door. She lives by herself so its not really safe when she forgets. So I got this Skylark device and installed it in about ten minutes tops. It works great. It has sound and lights to alert when a door has been left open. Since I installed this life saver...about two months ago, I have never seen her Garage Door open because she forgot. The transmitter runs off batteries and the Base unit that alerts is plugged into a wall socket. I highly recommend for a forgetful person on your block. December 17, 2014
Rated 1.0 out of 5.0 by Does not work as described........ The receiver does start flashing and beeping when the door is opened but 80% of the time continues flashing and beeping when door is closed... I have three senders and one receiver they are about 60 feet apart and is more work resetting the receiver than its worth.... The unit is two weeks old and is now not even being used!!!! Waste of money... January 6, 2015
Rated 5.0 out of 5.0 by Exactly what I needed simple and cheap that just works I need a simple alarm if Garage door opens. This is the a cheapest and complete set I found under $30. It comes with both the door sensor and alert base. Installation was straight forward and works pretty. I wish the mount screws were bigger as it was hard to turn them with a screw driver. It also comes with self adhesive if you don't want to drill your garage door. September 12, 2014
  • 2015-05-20T10:43:42.778-05:00
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