Real-time water level monitoring: Track the water level at any time via the APP to ensure there is no unexpected water shortag Customizable upper and lower limits: Freely set the highest/lowest water level to effectively prevent overflow or water shortage Remote alarms and notifications: When the water level exceeds the set limit, a notification will be sent to your mobile phone immediately, so you can have peace of mind even when you are remotely monitoring the water level The 4.4-meter long cable allows for flexible installation: it can be easily installed on tall water tanks without any restrictions Durable IP65 waterproof design: Long-lasting and resistant to outdoor rain, dust and splashes, ensuring stable performance over the long term Network mode:Zigbee 3.0 LED:Zigbee status Zigbee configuration:LED light flashes quickly Zigbee connection:LED lights on Zigbee not connected:LED light flashes slowly power supply:AC 110V~240V Sensor power supply:<100mA @ 5V DC Liquid level range:0m~5m Accuracy:± 0.02m Working temperature:-20℃~70℃ Protection level:IP65 (The product printed words may vary depending on the batch, but this does not affect use) Color: Dark Gray Material: plastic Package Contents: 1*ZigBee Ultrasonic Water Detector 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.