TS-FT005 Ultrasonic Liquid Level Meter 1. Calculate the liquid level height based on the time from ultrasonic emission to reception. 2. Water level monitoring and automatic low water level alarm, time display and alarm 3. Real-time understanding of water tankindoor temperature 4. Transmission frequency band: 433MHz 5. Transmission distance: 100 meters (open space), 30 meters (effective distance) 6. Transmitter parameters: Waterproof grade: IP65 Power supply: 6xAAA (1.2V) (not included) Weight: 216g Size: 6.8x10.9x16.7cm Temperature resolution: 0.1 degrees Celsius, accuracy: +-1 degrees Celsius Water level resolution: 0.01m, accuracy: +-0.05m Water level measurement range: 1-5m 7. Receiver parameters: Indoor temperature range: 0-50 degrees Celsius, 32-122 degrees Fahrenheit Resolution: 0.1 degrees Celsius Accuracy: +-1 degree Celsius Water tank temperature measurement range: -40~60 degrees Celsius, -40~140 degrees Fahrenheit Alarm duration: 120s Power supply: 3xAAA batteries (not included) Weight: 184g Dimensions: 13.5x2.6x8.4cm