SONOFF SNZB-03 ZigBee Motion Sensor

1. Introduction

The SONOFF SNZB-03 is a ZigBee-based motion sensor designed to enhance your smart home security and automation. It detects movement within its detection range and can trigger various actions through a compatible ZigBee Bridge, such as turning on lights or sending alert notifications to your mobile phone. This manual provides detailed instructions for installation, operation, and maintenance of your SNZB-03 motion sensor.

Image 1.1: Two SONOFF SNZB-03 ZigBee Motion Sensors.

2. Product Features

• Instant Alert Notifications: Receive immediate alerts on your mobile phone when motion is detected.
• ZigBee Bridge Required: Operates with a SONOFF ZigBee Bridge (or other compatible Zigbee hubs) to activate both ZigBee and Wi-Fi devices.
• Easy Installation: Tool-free installation using included 3M adhesive, allowing flexible placement in various locations.
• Wide Detection Range: Boasts a 6-meter detection distance and a 110° viewing angle for comprehensive coverage.
• Family Sharing: Share sensor access with family members to collectively monitor your home.
• 3-Month History Records: Review past motion detection events for up to three months.
• Camera Linking: Link a camera to the motion sensor to view live footage on the app when motion is detected.

Image 2.1: Visual representation of key features including alert notifications, ZigBee protocol, ultra-low energy, camera linking, share control, and history records check.

3. What's in the Box

• SONOFF SNZB-03 Motion Sensor
• 3M Adhesive (pre-applied or included separately)
• User Manual (this document)

4. Specifications

Image 4.1: The sensor offers a 110° viewing angle and a 6-meter detection distance.

5. Setup

5.1 Prerequisites

• A compatible ZigBee Bridge (e.g., SONOFF ZigBee Bridge) is required for the SNZB-03 to function.
• Ensure your ZigBee Bridge is powered on and connected to your network.
• Download and install the eWeLink app on your smartphone.

5.2 Battery Installation

The SNZB-03 requires one Lithium Metal battery. To install or replace the battery:

1. Carefully open the back cover of the sensor.
2. Insert the Lithium Metal battery, ensuring correct polarity.
3. Close the back cover securely.

5.3 Pairing with ZigBee Bridge

Follow these steps to pair your SNZB-03 motion sensor with your ZigBee Bridge:

1. Open the eWeLink app and navigate to your ZigBee Bridge device.
2. Put the ZigBee Bridge into pairing mode (refer to your Bridge's manual if unsure).
3. On the SNZB-03 sensor, press and hold the reset button (usually a small pinhole button) for about 5 seconds until the LED indicator flashes, indicating it's in pairing mode.
4. The sensor should appear in the eWeLink app. Follow the on-screen prompts to add it.

5.4 Mounting the Sensor

The SNZB-03 can be easily mounted using the included 3M adhesive. Choose a strategic location within its detection range (up to 6 meters and 110° angle) where motion detection is desired, such as hallways, entryways, or rooms.

• Clean the surface where you intend to mount the sensor.
• Peel off the protective film from the 3M adhesive on the back of the sensor.
• Firmly press the sensor onto the desired surface for a few seconds.

Image 5.1: Examples of simple and intelligent sensor installation in various home areas.

6. Operating Instructions

6.1 Motion Detection and Alerts

Once paired, the SNZB-03 will detect motion within its range. When motion is detected, you will receive an instant alert notification on your mobile phone via the eWeLink app.

Image 6.1: Low-battery notification displayed on a smartphone.

6.2 Smart Scene Automation

The primary function of the SNZB-03 is to trigger smart scenes. You can set up automated actions based on motion detection:

• Trigger Lights: For example, set a scene where lights automatically turn on when motion is detected in a hallway.
• Activate Wi-Fi Devices: The ZigBee Bridge allows the motion sensor to activate not only ZigBee devices but also connected Wi-Fi devices.

Image 6.2: Example of a smart scene: motion detected in a hallway turns on the light.

6.3 Camera Linking

For enhanced security, you can link a compatible camera to the motion sensor within the eWeLink app. This allows you to view what's happening in your home through the camera feed directly on the sensor's page in the app when motion is detected.

Image 6.3: Camera linking feature, showing live view on motion detection.

6.4 History Records Check

The eWeLink app stores a 3-month history of motion detection events, allowing you to review past activities and monitor your home's security over time.

6.5 Trigger Mechanism

The SNZB-03 operates with a specific trigger mechanism:

• No motion is detected: When motion is detected, after one minute of unoccupied movement, a "no motion detected" status is triggered.
• Motion is detected: The next trigger can be activated if there is no motion detected within one minute after the previous detection.

Image 6.4: Explanation of the sensor's trigger mechanism.

6.6 Official Product Video

7. Maintenance

7.1 Battery Replacement

The SNZB-03 is powered by a Lithium Metal battery. When the battery level drops to 10%, you will receive a low-battery notification on your eWeLink app. Replace the battery promptly to ensure continuous operation. Refer to Section 5.2 for battery installation steps.

7.2 Cleaning

Wipe the sensor periodically with a soft, dry cloth to remove dust and debris. Do not use liquid cleaners or abrasive materials.

8. Troubleshooting

• Sensor not detecting motion:
  • Check battery level and replace if low.
  • Ensure the sensor is within range of the ZigBee Bridge.
  • Verify the sensor's placement and ensure no obstructions are blocking its detection angle.
  • Check the trigger mechanism settings in the app (refer to Section 6.5).
• Sensor frequently disconnects or shows offline:
  • Ensure the ZigBee Bridge is stable and powered on.
  • Move the sensor closer to the ZigBee Bridge or consider adding Zigbee repeaters if you have a large home.
  • Re-pair the sensor with the ZigBee Bridge if the issue persists.
• Alerts not received:
  • Check your phone's notification settings for the eWeLink app.
  • Ensure your phone has an active internet connection.
  • Verify that the smart scene for alerts is correctly configured in the app.
• Difficulty pairing the sensor:
  • Ensure the sensor and Bridge are in pairing mode simultaneously.
  • Try resetting the sensor (press and hold the reset button for 5 seconds).
  • Ensure no other Zigbee devices are interfering with the pairing process.

9. Warranty and Support

For warranty information and technical support, please refer to the official SONOFF website or contact their customer service directly. Keep your purchase receipt for warranty claims.