Sonoff SNZB-03PR2 - SenseGuard Gen2 Zigbee Motion Sensor

Zigbee Motion Sensor with Brightness Detection — SenseGuard Gen2

Smart automations based on motion and ambient light

The Sonoff SNZB-03PR2 SenseGuard Gen2 is a high-precision Zigbee motion sensor that detects movement and adjusts automations according to ambient light. Compatible with Sonoff Zigbee gateways and platforms such as Alexa, Google Home, and Home Assistant for a safer and more efficient home.

✨ Smart automations that adapt to the environment
SenseGuard Gen2 does not just detect movement — it also measures ambient brightness to decide whether to switch the lights on. If there is already enough natural light, it keeps the lights off, saving energy. Ideal for hallways, stairs, garages, and entrances. Simple installation with included wall mount.

✔ High-precision PIR sensor — reliably detects movement
✔ Integrated brightness sensor — avoids turning on unnecessary lights
✔ Zigbee 3.0 connectivity — low power consumption, long range
✔ Compatible with Alexa, Google Home, and Home Assistant (via Zigbee gateway)
✔ eWeLink app with scenes, schedules, and advanced automations
✔ Easy installation with included wall mount
✔ Long-lasting battery (CR2450)

Usage Example

1. Automatic hallway lighting

Install the SenseGuard Gen2 on the hallway ceiling. Whenever someone walks by, the lights turn on automatically. The brightness sensor ensures the lights only turn on when it is dark — during the day, natural light is sufficient and the sensor does not waste energy.

2. Garage security

Place the sensor at the garage entrance. Receive notifications on your phone whenever movement is detected and automatically switch on the garage light. Ideal for knowing when someone arrives home or for detecting unauthorised access.

3. Staircase automation

Install a sensor on each floor of the stairs. The light turns on on the correct floor when it detects movement, and switches off after a few minutes of inactivity. With the brightness sensor, the stair lights never turn on during the day.

Product features

Brand: Sonoff
Model: SNZB-03PR2 (SenseGuard Gen2)
Type: Zigbee motion sensor
Sensor: PIR (passive infrared)
Brightness: Integrated ambient light sensor
Connectivity: Zigbee 3.0 (IEEE 802.15.4)
Power supply: CR2450 battery (included)
Installation: Wall/ceiling mount (included)
Application: eWeLink (via Zigbee gateway), Alexa, Google Home, Home Assistant
Compatibility: Sonoff Zigbee gateways (ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost, ZBDongle)
Certifications: CE, RoHS

What’s in the box

✔ 1x Sonoff SNZB-03PR2 - SenseGuard Gen2 Motion Sensor
✔ 1x CR2450 Battery
✔ 1x Wall/ceiling mount
✔ 1x Quick installation guide

Barcode: 6979033600638
Reference: SNZB-03PR2

Note: Requires a compatible Sonoff Zigbee gateway (not included). The included battery has an estimated lifespan of 2 years, depending on activation frequency and environmental conditions. Install in a sheltered location, not suitable for outdoor use without protection.