Usage Tips:Adaptor: AC 110V-250V Sensor power supply: ≤100mA 5V DC Network mode: Zigbee 3.0 Level Range: 0.1m~4m Accuracy: ± 0.02m Operation Temperature: -20℃-50℃ Protection: IP65 Measuring Range:water level Display Type: Analog Only Supply Voltage: DC 5V Product Name: WIFI Remote Ultrasonic Liquid Level Water Tank Monitor Sensor Battery: DC 5V Application: water tank APP:Tuya/Smart Life range: 0.1m-4m alarm: 80db Alarm mode:message to app Note:This product does not include a ZIGBEE gateway,This is a ZIGBEE product, it must work under a ZIGBEE gateway, please make sure you have a Zigbee gateway that supports Tuya Smart. Voltage: AC100-240V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Color: As Shown Material: plastic<br > <br > Package Contents: 1 x Tuya Zigbee Ultrasonic Liquid Sensor 1 x Power Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.