Features:
1. Measuring liquid depth
2. 10-level depth indicator chart
3. Maximum/minimum record of liquid surface depth
4. High and low-value alarm of liquid level depth
5. Low liquid level alarm
6. Room temperature
7. Ambient temperature of liquid
8. Alarm clock function
9. Can stand on desktop or wall

Parameter:
1. Indoor temperature range: 0~60 degrees Celsius
2. The temperature range around the liquid: -40~60 degrees Celsius
3. Temperature accuracy: +/-1 degrees Celsius
4. Liquid depth range: 0 ~ 15m
5. Display accuracy: 0.01m
6. Measurement accuracy: +/-0.03M
7. Transmission frequency: 433MHZ
8. Launch range: 100m (open area)
9. Transmitter frequency: send once every 30 seconds when the liquid level changes, and once every 3 minutes when the liquid level does not change
10. Power supply: Receiver: 2xAA batteries (not included); Transmitter: 6XAAA batteries (not included)
11. Battery life: 1 year
12. Size: Receiver: 108X94X27mm; Transmitter: 97X68X152mm
13. Display screen: 66X45mm(3.3 inch)