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Contact Sensor for Windows or Doors
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Contact Sensor for Windows or Doors

SKU: S02Contact
  • No Contract
    or Monthly Charges
  • 3 Year
  • 30 Day
    Satisfaction Guarantee
  • In the Package
  • Description
  • Specifications
  • Features

This sensor is a magnetic contact sensor for doors, windows, and other entry points. When the magnet and the sensor are separated, the sensor sends a wireless signal to trigger the alarm. When you mount one piece on the door or window, and the other piece on the frame, the sensor will activate whenever the door or window is opened. For best performance, you should not mount this sensor directly on a metal surface. The sensor and the magnet should be no further than ¼ inch apart when the door or window is closed. When applying the adhesive tape, make sure that you are mounting on a clean, flat, dry surface. A starter battery is included with the sensor, and we offer additional 23A batteries for purchase on our web site.

  • One “23A” 12-Volt battery
  • 433MHz wireless signal
  • ~ 150 ft. range, with line of sight
  • Top LED light flashes for 1-2 seconds to indicate activity
  • Bottom LED lights up solid to indicate a low battery
  • Magnetic sensor protects doors, windows, and other entry points
  • Mount on a clean, flat, dry surface. Place a spacer between the sensor and any metal surfaces.
  • 2 LED lights - Activity Light and Low Battery Indicator Light

In stock

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Contact Sensor for Windows or Doors Description

The basic building block of the S02 and GSM Alarm Systems, contact sensors are designed to detect a window or door being forced open. The most likely method of forced entry into a home or office is via a door or windows. That's why it's so important to have contact sensors attached to the windows and doors on at least the ground floor of your home. These totally wireless sensors contain a small battery and transmit data electronically to the main control panel.

Purchase this accessory at the same time as an alarm package and we will program everything for you!

Reviews For This Product
See All 22 Reviews
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my #4 door sensor do not catch all the time to trigger the kay 88 pop up
Review by carl

press keys pad button is vary touche

4.0- Review
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Easy Install
Review by Oscar

Great product and very easy to configure the system.

5.0- Review
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0 people found this review helpful.
8 Months and running Strong...
Review by Jacob

Great Battery Life!

5.0- Review
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1 people found this review helpful.
Door & Window Sensors
Review by Richard

Very easy to configure to my existing system.

5.0- Review
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0 people found this review helpful.
Work fine.
Review by Dave

The sensors are responsive, and I like the LED lights on the front to verify their operation. They need a way to hook up a remote wired magnetic set of contacts. Some sensors on other alarm systems have that capability. That way you could cover both sides of a horizontal double sliding window, for example.

4.0- Review
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0 people found this review helpful.
ratings 4.7 Overall Satisfaction Rating Based on 374 Ratings from Actual Customers
review rating
Lascelles D

Cheaper than Amazon.

Verified Customer
review rating
Zach R

Good job

Verified Customer
review rating
Shawn S

I have an old Radio Shack security system that has an auto-dialer. Picked it up back in 2001 after my house was broken into. Since then, I was busted in a 2nd time, and the alarm scared them off (in addition to me calling the house!). My old unit finally stopped working. I have a camera system too but any SMS notifications to my phone tend to go unnoticed versus a phone a call from my house. I love the fact that there are no monthly service fees for an autodialer.

Verified Customer
review rating
Andrew S

Customer Service was very helpful on the phone.

Verified Customer
review rating
Glenn S

Security System sounds great. Looking forward to using installing it for my friend.

Verified Customer
Contact Sensor for Windows or Doors

Are these compatible with almond 2015


Hi, Chris, Thanks for your question! These sensors are meant to be used in conjunction with one of our security systems, and are not compatible with smart home appliances. Regards, Amanda, Fortress Security Store


Can window contacts be painted to match color of window?


Hello, Yes the door/window contacts be painted to match color of window or door. Thank you, Fortress Security Store!


What are the dimensions for each component of the contact sensor for windows/doors? Thanks


Hi John, Thanks for you inquiry. The sensor part of the door contact is around 2.75 x .75 x 1.5 inches and the magnet part is 2.5 x .5 x .5 inches. I hope this helps and please let us know if you have any further questions, thanks!