IQ Recessed Door Sensor


Ultra secure. Practically invisible.

Professional grade recessed door sensor with encrypted wireless communication so your security system doesn’t get hacked. Hidden in the frame so you won’t even know it’s there.


  • S-Line encrypted technology protects wireless signal
  • Hidden in the door or frame so it won’t affect your decor
  • Alerts IQ Panel when the door is opened
  • 5 year of battery life under typical use

Panel Compatibility

IQ Panel 2 319.5Mhz version IQ Panel 2+ 319.5Mhz version IQ Panel 4 319.5Mhz version

Caution:  This item may not be returned after it has been physically installed.

1 year warranty

SKU: QS1134-840 Categories: , , ,


Hidden in plain sight

Installed right into the door and frame so you won’t have a visible sensor mounted on your door.

Be more aware of what happens in your home

The door sensor is a basic building block of home security alarms. But it’s more than that. It’s a tool to monitor activity in your home. Used with’s sensor activity monitoring, this little device opens the door to a world of smart home applications.

Trigger home automation

Automatically turn on the lights when a door opens. Or record a video clip. Adjust the thermostat when a door was left open.

Detect intrusions

If you’re going to use a security alarm, choose a professional grade sensor with secure wireless communication so you can be confident it will do it’s job.

Why should I use encrypted sensors?

The majority of security systems are not as secure as they could be. With technology advancing rapidly, it’s becoming more and more likely that someone who wants to compromise your security system can do so without much effort or expense.

IQ encrypted sensors send signals in a coded form that can only be understood by the alarm system they are connected to. This ensures that only your system can access the content of the message, keeping your sensor activity data safe and practically eliminating your system’s exposure to spoofing and replay attacks.

Don’t worry, this device integrates seamlessly

Surety is your connection to the award winning ecosystem, allowing you to use hundreds of best-in-class security and home automation devices from a single app that runs on almost anything. All that and the industry’s best customer service are why Surety is your home’s best friend.

Specs & Guides

Part number
2.25”D x .75”H
Wireless signal range
600ft (200M) in open air
Alarm, alarm restore, tamper, tamper restore, low battery
Transmitter frequency
319.5 MHz
Wireless Protocol
Supervisory keep-alive interval
70 minutes
RF Peak field strength
Typical 36000 uV/m at 3m
Operating Temperature
Relative Humidity
5-95% Non-Condensing
Storage Temperature
-40 – 80C
3V CR2 (x1)

Plan Compatibility

Security Alarm & Automation
Automate Alarm Home
Cameras Only
View Cam Cam Plus
Alarm, Automation & Cameras
Protect Complete


Why isn’t my sensor working?
If you’ve installed the larger side of the sensor in a metal door the wireless signal will not work. Put the large side in the door frame.

Still have questions? We’ve got answers!
The Surety support forum is the #1 resource for answers to all your questions about setting up and using the thermostat.
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Additional information

Control Panel



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