Overview
ADT door/window contact sensor — magnetic reed switch for openings on Command SiX or Self-Setup wireless systems.
On ADT systems, this device is a supervised wireless peripheral (SiX on Command, Self-Setup RF on DIY hub, or Z-Wave for automation SKUs) — status appears in the ADT+ or ADT Control app, and faults can block arming depending on mode settings.
At a Glance
| Specification | Details |
|---|---|
| Detection | Open/close (magnetic gap) |
| Wireless | SiX (Command) or Self-Setup RF — verify platform |
| Supervision | Panel/app sensor list — low battery, tamper, missing |
| Power | Battery per install guide |
What This Device Does Well
Provides reliable status reporting and user-facing alerts through the ADT+ or ADT Control app when installed and enrolled correctly.
Before You Service or Replace One
- Platform — Command SiX vs Self-Setup sensor family — battery type and reset steps differ.
- Hub/panel online — must show connected in app before diagnosing sensor.
- Range — distant devices may need Range Extender, not a new sensor.
- Tamper — cover fully closed before declaring hardware fault.
- Monitoring mode — Practice/disarmed modes affect whether alarms dispatch.
Official Sources
Use official ADT help.adt.com support articles for reset procedures, battery types, LED patterns, and regional availability — ADT updates app flows frequently.
FAQs
Does Door and Window Sensor DIY work without an ADT panel or hub?
Most ADT sensors, sirens, and keypads require an ADT Command panel or Self-Setup hub. Cameras and doorbells work in the ADT+ or ADT Control app but do not replace alarm controller functions.
Why does device status show Offline?
Usually battery, Z-Wave range, or hub internet — confirm hub or panel online before replacing hardware.
How do I reset and re-add the device?
Follow the factory reset steps in official ADT help.adt.com support for your exact generation — then Add Device in the ADT+ or ADT Control app near the hub.
Will professional monitoring dispatch on this fault?
Burglary dispatch requires ADT professional monitoring, correct arming mode, and cleared device status faults — verify in app settings.
Where is official documentation?
Primary reference: ADT door/window sensor installation guide
How do I test after installation?
Use ADT+ or ADT Control app device status, arm/disarm test (alarm devices), or motion/Live View test (cameras). Complete tests at final mounted location.
Can I mix generations?
Not always — verify Command vs Self-Setup compatibility in help.adt.com before buying replacements.
Does Door and Window Sensor DIY work without an ADT panel or hub?
Most ADT sensors, sirens, and keypads require an ADT Command panel or Self-Setup hub. Cameras and doorbells work in the ADT+ or ADT Control app but do not replace alarm controller functions.
Why does device status show Offline?
Usually battery, Z-Wave range, or hub internet — confirm hub or panel online before replacing hardware.
How do I reset and re-add the device?
Follow the factory reset steps in official ADT help.adt.com support for your exact generation — then Add Device in the ADT+ or ADT Control app near the hub.
Will professional monitoring dispatch on this fault?
Burglary dispatch requires ADT professional monitoring, correct arming mode, and cleared device status faults — verify in app settings.
Where is official documentation?
Primary reference: ADT door/window sensor installation guide
How do I test after installation?
Use ADT+ or ADT Control app device status, arm/disarm test (alarm devices), or motion/Live View test (cameras). Complete tests at final mounted location.
Can I mix generations?
Not always — verify Command vs Self-Setup compatibility in help.adt.com before buying replacements.