Overview
ADT smoke, CO, or combo detector — life-safety wireless device for eligible ADT 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 | Smoke, CO, or combo — SKU specific |
| Life safety | Follow code; professional monitoring recommended |
| Wireless | Platform-specific enrollment |
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.
Error Codes
ADT products report faults through the ADT+ or ADT Control app device status and device event history — not traditional numeric keypad codes like hardwired alarm panels.
How to read status
- Open ADT+ or ADT Control app → Menu → Alarm (or device tile for cameras).
- Tap device status or the device — note Offline, Tampered, Low Battery, Open.
- Tap the fault for ADT's suggested steps and linked help.adt.com articles.
- For hub issues, check Command panel / Self-Setup hub connectivity first — many "sensor offline" faults are mesh or hub internet issues.
Common status / trouble indicators
| App status / symptom | Meaning | First checks |
|---|---|---|
| Listener not triggering | Acoustic path or placement | Distance to smoke alarm; test with UL alarm test button |
| Smoke/CO device offline | Z-Wave or Wi-Fi fault | Battery, range, re-enroll |
| No fire dispatch | Monitoring not armed | ADT professional monitoring; verify fire monitoring enabled |
| Frequent false fire | Wrong device type for space | Use listed smoke/CO hardware where code requires |
App actions (typical)
| Action | Where in ADT+ or ADT Control app |
|---|---|
| View device status | Alarm → hub or panel → device status |
| Remove and re-add device | Device settings → Remove → Set up new device |
| Arm/disarm test | Alarm modes on home screen |
| Contact support | Help → Contact ADT |
Source: ADT smoke/CO detector install guide; ADT official support articles linked in this product folder manifest.
| Code | Meaning | Suggested Fix |
|---|---|---|
| Listener not triggering | Acoustic path or placement | Distance to smoke alarm; test with UL alarm test button |
| Smoke/CO device offline | Z-Wave or Wi-Fi fault | Battery, range, re-enroll |
| No fire dispatch | Monitoring not armed | ADT professional monitoring; verify fire monitoring enabled |
| Frequent false fire | Wrong device type for space | Use listed smoke/CO hardware where code requires |
| Action | Where in ADT+ or ADT Control app | |
| View device status | Alarm → hub or panel → device status | |
| Remove and re-add device | Device settings → Remove → Set up new device | |
| Arm/disarm test | Alarm modes on home screen | |
| Contact support | Help → Contact ADT |