Overview
Arlo wire-free outdoor siren — supervised alarm siren for the Arlo Home Security System.
On Arlo Home Security, this device is a supervised Z-Wave peripheral — status appears under device status in the Arlo app, and faults can block arming depending on mode settings.
At a Glance
| Specification | Details |
|---|---|
| Role | Outdoor alarm siren |
| Wireless | To Arlo Home Security hub |
| Power | Battery per install guide |
What This Device Does Well
Provides reliable status reporting and user-facing alerts through the Arlo app when installed and enrolled correctly.
Before You Service or Replace One
- Generation — Gen 1 vs Gen 2 vs 3rd gen — battery type and reset steps differ.
- Hub online — hub 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 kb.arlo.com support articles for reset procedures, battery types, LED patterns, and regional availability — Arlo updates app flows frequently.
Error Codes
Arlo products report faults through the Arlo app device status and device event history — not traditional numeric keypad codes like hardwired alarm panels.
How to read status
- Open Arlo app → Menu → Alarm (or device tile for cameras).
- Tap device status or the device — note Offline, Tampered, Low Battery, Open.
- Tap the fault for Arlo's suggested steps and linked support articles.
- For hub issues, check Home Security hub / SmartHub connectivity first — many "sensor offline" faults are mesh or hub internet issues.
Common status / trouble indicators
| App status / symptom | Meaning | First checks |
|---|---|---|
| Siren offline | Z-Wave supervision lost | Power, range, re-enroll |
| No sound on alarm | Mode or delay settings | Practice mode off; entry delay; device linked to location |
| Outdoor siren weak | Mount or power | Verify outdoor SKU; plug/battery per manual |
App actions (typical)
| Action | Where in Arlo app |
|---|---|
| View device status | Alarm → hub → 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 Arlo |
Source: Arlo outdoor siren setup guide; Arlo official support articles linked in this product folder manifest.
| Code | Meaning | Suggested Fix |
|---|---|---|
| Siren offline | Z-Wave supervision lost | Power, range, re-enroll |
| No sound on alarm | Mode or delay settings | Practice mode off; entry delay; device linked to location |
| Outdoor siren weak | Mount or power | Verify outdoor SKU; plug/battery per manual |
| Action | Where in Arlo app | |
| View device status | Alarm → hub → 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 Arlo |