This level sensor is DC24Vpower supply. If you need other parameters, plz contact us. Product Description . QDY30A submersible Water Level Sensor, its 304 &316 stainless steel and hermetically sealed housing make it suitable for most industrial liquids and oils. . The welded housing is tested in-house via a helium leak tester to ensure proper protection. Ventilation tube in the cable automatically compensates for changes in atmospheric pressure above the tank. . The conductors of the cable are also isolated from the outside environment to keep the level sensor operational for long-term use. Product name Submersible 4-20ma RS485 water sewage level sensor Key words tank water level sensor Model QDY30A Power supply 12-36VDC (standard) Output signal 4~20mA,1~5V,0~10V,RS485 Measuring range 0-500 meters H2O Compensation temperature -10~70 Medium temperature -40~80 Environment temperature -40~85 Measuring media Liquid,Water,OIL Accuracy 0.1%F.S, 0.25%F.S (standard) Zero tempe drift 0.03%F.S/ Sensitivity temperature drift 0.03%F.S/ material 316L core&Rubber breathable cable Overload 200%F.S Long-term stability 0.2%F.S/year Inherent frequency 5kHz~650kHz Measurement method The probe sinks into the bottom of the liquid. Protection grade IP68 Application: