Remote submersible water level logger can be widely used in petroleum, chemi-industry, power station, water conservancy, city flood control and city water supply and drainage, etc. Insert battery can work without manual control. The transmitter record level or pressure change value continuously. The transmitter can record from several days to several years, which depends on setting proper data collection interval. One AA battery 3.6V/2400mAh can work many years continuously for its low power consumption feature.