Motion sensor Gosund ST20 ZigBee – wireless occupancy sensor for smart home automation

Gosund ST20 Zigbee smart motion sensor Tuya — compact wireless motion detector for ZigBee smart home systems. The ST20 detects movement with a wide-angle infrared sensor and integrates with Zigbee-compatible hubs and the Gosund app to trigger automations such as lighting, alarms or camera recording. It supports battery power (2×AA) and optional micro USB (DC 5V/1A) for flexible placement around the home.

Advantages

The ST20 provides a 128° detection angle and up to 8–10 m effective range using infrared detection, offering broad coverage with minimal blind spots. It sends instant push notifications through the Gosund app and includes a built-in audible alarm. Low standby current (≤ 81 μA) and compact ABS housing (70×45×35.6 mm, 100 g) enable long battery life and discreet installation. Zigbee 2.4 GHz compatibility ensures integration with many smart hubs and devices.

Suitable for

• Rooms, hallways and entryways
• Triggering lights and alarms
• Automations with cameras, smart bulbs or curtains
• Presence-based energy-saving scenarios

Key specifications

• Manufacturer: Gosund
• Model: ST20
• Protocol: Zigbee (2.4 GHz IEEE 802.15.4)
• Detection angle: 128°
• Detection range: ≤ 8 meters (up to 10 m described in overview)
• Power: 2×LR6/AA 1.5V (alkaline) or Micro USB DC 5V/1A
• Standby current: ≤ 81 μA
• Alarm current: ≤ 3 mA
• LED indicator: Red
• Dimensions: 70×45×35.6 mm
• Weight: 100 g (without batteries)
• Operating temperature: 0°C to 50°C
• Operating humidity: 10%–85% RH
• Certifications: CE/RED, RoHS

How to use

Install the Gosund ST20 on a wall or corner at the recommended height for optimal coverage, using the included mount or adhesive. Insert two AA batteries or connect a Micro USB supply (DC 5V/1A). Add the device to a Zigbee-compatible hub via the Gosund/Tuya Zigbee integration or the Gosund mobile app, then configure detection sensitivity, notification settings and any automation routines (for lights, alarms or cameras) in the app. Test the sensor after installation to confirm detection area and notifications.

Recommendations

Place the sensor where it has an unobstructed view of the monitored area and avoid pointing it directly at heat sources or windows to reduce false triggers. Regularly check battery level in the app and use alkaline AA batteries for stable operation. For reliable connectivity, ensure the Zigbee hub is within range and consider adding Zigbee repeaters if needed.