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Door Locks & Access Control
Garage Door Control
Alert System Type
Motion Alert
Car & Garage Product Type
Garage - Door Control
Sensor Type
Pressure / Floor
Battery Operated
Ease of Installation
Intermediate (Installs < 60 minutes)
Skylink Technologies
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Wireless Sensor Sends Alert
if Garage Door is Left Open

Skylink GM-318T Household Alert Garage Door Alert Sensor
Skylink GM-318T Household Alert Garage Door Alert Sensor
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Household Garage Door Alert Sensor
Skylink GM-318T Household Alert Garage Door Alert Sensor
Item# 7311AS
Price: Normally $13.95 
Hot Deal $13.10
Free shipping on orders over $175 - See Details


  • Notifies you when garage door is open
  • Requires the Household Alert Receiver
  • Easy to set up

Essential Info

Remembering to close your garage door can frequently be difficult, especially if your hands are full when you enter the house. But your home can still remain safe, thanks to the Household Garage Door Alert Sensor, which works by sending a wireless signal to the Household Alert Receiver (sold separately), which in turn indicates the status of the garage door immediately with both audio and visual indicators.


What's Included

  • Household Alert® Sensor
  • 3-volt lithium battery
  • Mounting tape and screws
  • Instructions
  • Clip
  • More Info

    The Household Garage Door Alert Sensor can be purchased together with the Household Alert Receiver as a kit. Since the Household Alert Receiver expands to accept signals from four sensors, the Household Garage Door Alert Sensor can also be used to expand the Household Motion Alert System, the Household Door/Window Alert System or the Household Water Alert System. A Combination Set is also available, which includes both the Garage Door Alert Sensor and a Motion Alert Sensor to trigger its Household Alert Receiver.

    The garage door sensor mounts near the bottom of your garage door and sends a wireless signal to the receiver in your house when the garage is opened. With its range of 300 feet, you'll be able to place the receiver in any convenient location in your home. If you need to cover a distance further than 300 feet, use the Household Alert Wireless Repeater to extend the communication range between the Skylink wireless devices and ensure the security of your home.

    If you're planning to leave your garage door open while you work in your garden or on your car, the audible alert can be muted easily.



    Manufacturer Product No.:GM-318T
    Dimensions:2 3/8" x 2 3/4" x 1 1/2"
    Operating Range:300 feet
    Approvals:FCC/IC compliant
    Warranty:1 year, limited

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Skylink Technologies Inc, Tel: (800) 304-1187


    Household Garage Door Alert Sensor       
    Household Garage Door Alert Sensor       


    46 Ratings
    5 star: 26%  (12)
    4 star: 26%  (12)
    3 star: 15%  (7)
    2 star: 13%  (6)
    1 star: 20%  (9)
    Average Customer Rating
    (46 customer ratings)
    Share your thoughts with other customers
    JOSEPH K. -- san antonio, TX   7/21/2014
    Works well.
    CHRIS -- thornton, PA   7/13/2014
    Don't bother if the receiver is more than two rooms away. Even when the receiver is close the transmitter is too glitchy, sometimes it works and sometimes it doesn't. Going to see if a neighbor can use it or it's going in the trash
    LORALEA -- duluth, MN   4/15/2014
    Very Poor product the range from the base unit to the sensor is so weak that it did not work.
    JASON -- indianapolis, IN   9/18/2013
    Bought two....only one worked. I have a detached garage and had to move the receiver to get close enough to pick up the signal from the work sensor.
    CHRISTIAN -- joliette, QC   11/19/2012
    WILLIAM -- chepachet, RI   10/1/2012
    Works as advertised. Very easy to program and install.
    MARK -- whittier, CA   6/3/2012
    I have an older wooden garage door and at first I ordered the whole kit, but I used my sensor the way that was prescribed and because there is a change in elevation of the pavement between my garage and driveway, the first sensor broke. I ordered this replacement sensor and I mounted it perpendicular to the original orientation (so that the sensor would point directly into the garage) and I put a small "L" bracket so that when the garage closes, it will push in the plunger. It works great now and we don't have trouble keeping our garage closed any more.
    LARRY -- plano, TX   3/11/2012
    PAUL -- watchung, NJ   6/23/2011
    The range of the combination is less than expected, all doors are within 40 ft of the house station and lose the signals frequently. Unplugging and replugging the main unit re-establishes the correct response.
    RICHARD -- cupertino, CA   4/17/2011
    Product is exactly what I wanted and as advertised. I am happy with the price and rapid shipment. Works as advertised.
    CHARLES -- brentwood, TN   2/21/2011
    Very easy to setup and use. However it or the base unit will indicate a door is up when it is not up.
    AL -- lake tapps, WA   1/13/2011
    I bought two extra sensors because I have three garage doors I wanted to monitor. These did come with batteries and ready to go. They were easy to install but are very flaky.
    EDWARD -- raleigh, NC   1/2/2011
    I purchase the extra sensors to cover the other doors even though I can see those doors. Keeps the kids honest about the time they came home.
    SEAN -- minneapolis, MN   11/15/2010
    Does not work.
    SMITH -- warrenton, VA   7/29/2010
    Easy to install and works great!
    DANIEL -- crown point, IN   10/25/2009
    Product Was Poor. Smarthome customer service was excellent. Will purchase from Smarthome again.
    SAMUEL D -- denver, CO   10/6/2009
    Works fine, easy to install. Instructions are well written.
    GUY -- maple grove, MN   10/3/2009
    Attachment to garage door is poor.
    GERALD -- holland, MA   8/26/2009
    Works good
    ERIC -- brookfield, IL   5/2/2009
    Works as advertised.


    Household Alert Wireless Repeater       
    Household Alert Wireless Repeater       

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