Tuya ZigBee Temperature, Humidity and Siren 2-in-1 Sensor detects environmental changes in real time. The siren alarm produces a sound intensity greater than 90dB. When the alarm is triggered, instant notifications are sent to your smartphone, and alarm logs can be reviewed via the app. Suitable for use in various locations such as kitchens, offices, and more. This device can be integrated with other Tuya-based smart Wi-Fi products to create customized smart home scenarios. Features include ultra-fast response, anti-interference design, ultra-low power consumption, and cost-effective performance. Powered via 5V 1A USB port. Standby current: 61uA - 180uA USB port: 5V/1A Sound intensity: 90dB Temperature detection range: -10°C to 80°C Humidity detection range: 0% to 100% Wireless frequency: 2.4GHz Communication protocol: Zigbee 3.0 Wireless standard: Zigbee IEEE 802.15.4 Wireless range: Up to 40 meters Color: White Material: Plastic Package Contents: 1 x Siren 2-in-1 Sensor Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3cm.