Feature:1. AC / DC12V power supply, common voltage, convenient and practical.2. Automatic trigger, set the highest and lowest water level at will.3. Widely used, can be matched with automatic control of solenoid valve pump motor.4. With stable function and excellent quality.5. Maximum Load: 30A / 250VAC, 30A / 120VAC, 30A / 30VDC.Specification:Item Type: Water Level Automatic ControllerStandby current 11MAWorking current 82MASize: Approx. 67 x 33 x 25mm / 2.6 x 1.3 x 1inWeight: 43 g / 1.5 oz(approx.)Maximum Load: 30A / 250VAC, 30A / 120VAC, 30A / 30VDCApplication: Domestic water towerAquarium fish tank water change systemAutomatic control of conductive liquidLivestock automatic feeding systemFarm automatic water supply systemAnd other places requiring automatic water supply and water exchange..Package List:1 x Water Level Automatic ControllerNote:1. The probe (wire) is not included in the package, no special probe is needed, and the probe can be made with household wire.2. For safety, please use a well-isolated AC / DC power supply.