Utilizing non-contact ultrasonic technology, it not only monitors liquids but also precisely measures liquid levels.An intuitive interface displays real-time liquid level percentage (%), depth (m), and status (normal/dry/etc.). Equipped with configurable upper and lower limit alarms switches and adjustable alarms time (1-60 minutes), it prevents overflow or dryness. View and analyze liquid level history by day, month, or year directly in the app. Clear "obstruction-free" reflective area specifications (e.g., height H=5m, depth D 2.6m) and a ±15° beam angle precise installation and reliable performance. Use Tuya Smart or Smart Life apps to remotely monitor and control sensors anytime, anywhere. Detection Technology: Ultrasonic Wi-Fi Standard: Wi-Fi 2.4G Beam Angle: ±15° Alarms Configuration: Upper and Lower Level Switches Alarms Time Range: 1 to 60 Minutes Data Display: Level Percentage (%), Level Depth (m), Status Data History: Daily, Monthly, and Yearly Views Product Name: Wi-Fi Liquid Level Sensor Power Supply Voltage: 5V/1A Battery Capacity: 7800mAh 3.7V Current: ≤100mA Operating Temperature: -20°C to 70°C Accuracy: ±0.02m Level Range: 0.1m to 5m Mounting Height: Up to 5m Protection Rating: IP65 Wireless Standard: 2.4GHz Wi-Fi Opening Size: 5.5cm Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC100-240V Color: Black Material: plastic Package Contents: 1 x Tuya WiFi Smart Liquid Level Sensor 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.