Features:This is a infrared dual-level water sensor module with two detection probes.Sensor probes adopt full-sealed waterproof design.Output mode is relay switch output, withstand current is 30A.When liquid level state indicators (D3, D4) light on at the same time, relay status indicator (D1) lights on and relay start to work. NO and COM are connected and external load starts to work. When D3, D4 light off at the same time, D1 lights off and relay stops working.Used in laboratory, automatic water filling system of fish tank and other situations requiring water level control and protection, as well as general industrial site water level control.Specifications:Working Voltage: AC85V~265VWorking Current: <100MAResponse Time: <500msResistance: 100MOperating Temperature: -30~80Operating Humidity: 0~100%RHSize: Approx. 71.5*45*21.5mm/2.81*1.77*0.84"Package Includes:1 x SensorNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..