Review on Ultrasonic Water Tank Liquid Depth Level Meter Sensor: High/Low Alarm, Temperature Display, 3.3 Inch LED by Shane Miller

It didn't work. I believe we installed it correctly and within 100 feet of the transmitter with no interference. Small chance my Verizon antenna was interfering, but the frequency was different so I ended up marking it as pure junk. My aquarium is 10 feet tall and about 5 feet in diameter. The space requirement between the sensor and the high tide line (greater than 2 feet) is also an issue. We managed to get 2.25 feet on a tank, but most tanks don't have that.