Door and window sensors mount easily on doors and windows to protect common entry points. The sensors alert you with a chime and app notification any time a door or window with a sensor opens or closes. They can also be used to generate alarms and launch automations.
Sensor overview
Aligning dots
Red LED indicator
Tamper switch
Battery and battery compartment
Test button
Bottom fixing screw
Tamper compression mark
Magnet
Magnet spacer
Pairing your sensor
Make sure you have the most recent of the AT&T Connected Life app installed on your mobile device.
Select the Menu (≡).
Tap + Add Device from the list, then Door and window sensor.
Select Door and window sensor.
Unbox the sensor and magnet.
Pull the plastic battery tab on the side of the sensor and tap Continue.
Press and release the Learn button on the back of the sensor. Once paired, the sensor will display online and you’ll be taken to the next step.
Choose your sensor type (door sensor or window sensor) and give it a name.
After pairing the door and window sensor with the security hub, test it by aligning the magnet and sensor. When you pull the magnet away, you should hear the hub chime (if sounds are enabled) and see a door open event on your Connected Life activity timeline. This test can help you choose where to install the sensor so it’s in range of your security hub.
Test mode
Use test mode to check the wireless range of your door and window sensor before you install it.
To activate test mode, press the Learn button on the back of the sensor. Once it’s activated, the LED status light turns on. Each time the button is pressed, the sensor sends a test signal to the security hub.
Test mode stays active for three minutes.
Mounting and installing your sensor
Tips
There can be a 0.75" gap between the sensor body and magnet. If you cannot place them this close together, consider using a motion sensor or security camera to protect the room instead.
Avoid mounting the sensor near metal objects, like door locks and metallic door frames. They could cause the magnet to malfunction.
Make sure to align the door sensor and magnet when you mount them for the best opening and closing detection.
Steps
Make sure the mounting surfaces are clean and dry.
Remove the adhesive backing from one side of the velcro mounting strip and secure the strip to the back of the sensor body.
Remove the adhesive backing from the magnet and the velcro mounting strip on the other side of the sensor body.
Press the sensor body and magnet to the desired door or window frame.
Align the sensor magnet to the magnet alignment area (textured surface) of the sensor body, located between the two alignment marks.
FYI: Some door and window frames (typically raised door or window frames) don’t have a reliable connection between the sensor body and magnet without using an offset spacer. If you need to raise the magnet to position it closer to the main sensor unit, use the included spare magnet adhesive strip to mount the rubber offset block first, then mount the magnet directly to the offset block.
Examples
Magnet Parallel to Sensor Body
Magnet Perpendicular to Sensor Body
LED status light guide
In normal operation, the LED status light remains off except in the following situations:
The sensor battery is low.
The sensor is in test mode and the magnet comes in contact with the sensor.
The door contact's tamper switch is activated.
Tamper switch
The tamper switch is designed to protect against unauthorized cover opening. When set off, the door contact signals the control panel for reporting and the LED lights up.
Battery guide
The door and window sensor uses one CR2450 Lithium battery. It should last around four years under normal operating conditions. The sensor can also detect a low battery. When the battery is low, the LED lights up and the sensor sends a low battery signal to the security hub. You’ll get a notification in the Connected Life app.
The door and window sensor operating temperature is 14° to 113° F. Extreme cold temperatures will damage the battery, so use caution when installing this device on doors or windows that could be exposed to harsh environments.
Replace the battery
1. Remove the bottom fixing screw to detach the cover from the base.
2. Use a flat head tool to fit into the cover opening hole on one side of the sensor and pry the base from the cover.
3. Repeat on the other side, then gently separate the base from the cover.
4. Remove the old battery with the flat head tool.
5. Press the test button 5-6 times to fully drain any residual power.
6. Insert a new battery from the top right corner of the battery compartment. Make sure the positive side (+) faces up and the battery is secured by the two hooks.
7. Fit the two hooks on the top edge of the base into the hook holes on the cover.
8. Close the lower part of the cover and the base. You’ll hear a click when it’s attached.
9. Tighten the bottom fixing screw.
Tech specs
Size & weight
Sensor body: 2.09 x 1.20 x 0.40"
Sensor magnet: 1.0 x 0.70 x 0.30"
Gap: Allows for a gap of up to 0.75″ between sensor body and sensor magnet
Weight: 1.20 oz
Connectivity & integrations (security hub required)
AbodeRF (433Mhz)
Amazon Alexa, Google Assistant, automations
Power
Battery: 1x CR2450 Lithium (pre-installed, replaceable)
Expected battery Life: Up to 4 years
Environmental
Not rated for outdoor use
Operating temperature: 14° to 113° F
Operating humidity: Up to 85% non-condensing
Certifications
FCC, CE, IC, NOM