Affordable, Reliable, and Trusted  24/7 Alarm Monitoring Services
The Monitoring Center logo

Door and Window Alarm Sensor

The Monitoring Center's alarm door sensor triggers an instant alert the moment an unauthorized opening is detected and notifies TMC's 24/7 central station so a live agent can respond immediately.

📏 Low Profile 📡 Wireless 🔋 3.0V Battery-Operated
🎁
Limited Time Offer! 6 Months Free* Sign Up Bonus
*With approved monitoring. Restrictions apply.
Monitoring
Starting At$9.99/mo*

Get A Quote For Your Home

🔒 Your information is secure and will never be shared.
🛡25+ Years
In Business
👥Thousands Of
Satisfied Customers
★Top Rated
On Google ★★★★★
🎧Live Operator
Monitoring
Alarm door and window sensor
Entry Sensor

Door and Window Alarm Sensor

Encrypted Wireless Door and Window Contact
$29.00 per device, professionally installed

This alarm door and window sensor is ideal for any entry point where a minimally visible wireless window sensor or wireless door sensor is preferred. It is reliable for both homes and commercial properties.

It detects open and closing action, continuously monitoring the contact between door and frame or window and sill. Any unauthorized opening triggers an immediate alert. A magnetic contact mechanism with no moving parts delivers consistent detection across thousands of open and close cycles.

Encrypted wireless transmission prevents interception or jamming by anyone trying to defeat your security system. The slim design installs with a peel-and-stick mount, and these alarm door sensors can be placed on any potential entry point in the property.

  • Detects Open and Closing Action
  • Encrypted Wireless Transmission
  • Magnetic Contact, No Moving Parts
  • Peel-and-Stick Mount
  • Fully Wireless, Battery Powered
  • Homes and Commercial Properties

Where to Install Your Wireless Alarm Sensors

For effective coverage, TMC recommends placing entry point sensors at front and back doors, ground-floor windows (particularly those hidden from street view), garage entry doors, sliding glass doors, and basement windows.

An alarm door sensor works alongside other alarm system sensors, such as smoke and heat detectors, to provide another layer of protection. If an alarm signal is received, TMC's monitoring team follows your established response procedures and coordinates assistance when necessary.

Professional Installation and Monitoring

This alarm door and window sensor is straightforward and quick to install using the peel-and-stick mount. TMC also offers professional installation for a fully integrated setup.

1
📍

Optimal Placement

TMC's certified technicians can assess your home's entry points and recommend how many door and window alarm sensors you need and where to place them.

2
🔧

Seamless Integration

TMC can also integrate your alarm door sensors into your monitoring system. Bundle pricing is available when combined with other TMC security system accessories and monitoring services.

3
🎧

24/7 Monitored Protection

Connect your sensors to our UL-Certified monitoring center. Operators are available 24/7/365 to receive alarm signals and coordinate emergency dispatch.

Compatible With Most Alarm Systems

These alarm door and window sensors are compatible with most monitored alarm systems, including many setups that are not currently connected to The Monitoring Center. Not sure if yours qualifies? Call, and a security advisor will check in minutes.

Frequently Asked Questions

How does an alarm contact sensor work?

The sensor consists of two magnetic parts: one mounted on the door or window frame, and one on the moving panel. When the two parts separate, the magnetic connection breaks and the sensor sends an encrypted wireless signal to your alarm panel. This triggers your security system and alerts TMC's monitoring center. A magnetic door sensor is also highly reliable, going through thousands of open and close cycles without degradation in performance.

Can I install the sensor myself?

Yes, the peel-and-stick mount of these alarm door sensors makes installation very straightforward. No drilling or tools required. TMC also offers professional installation for property owners who prefer a fully integrated setup handled by certified technicians.

How many sensors do I need?

Every entry point is a potential vulnerability. At minimum, TMC recommends putting alarm window sensors on all ground floor windows and door sensors covering all exterior doors. The number depends on your property's layout. Call us and a security professional will help you determine the right coverage.

Will this sensor work with my existing alarm system?

Yes. This sensor is compatible with TMC's professional monitoring platform. If you have an existing alarm system, call us to confirm compatibility of these motion and security sensors with your current panel before buying.

Ready to Protect Your Property?

Call The Monitoring Center today and a security professional will help you choose the best locations, confirm compatibility, and schedule professional installation of your alarm door and window sensors.

☎ Call Now   1-866-247-4999
Call Now: 1-866-247-4999