ITEM NAME:12V Water Level Automatic Controller Liquid Sensor Switch Solenoid Motor OWQ Descriptio n Description: Interface description: HIGH : Upper limit probe OUTÂ : Output probe LOWÂ : Lower limit probe IN+Â : Power terminal 1 (regardless of positive and negative) IN-Â : Power terminal 2 (regardless of positive and negative) NCÂ Â : Relay normally closed contact COMÂ : Relay common contact NOÂ Â : Relay normally open contact Working voltage: DC 12-15V(AC 9-12V) Standby current 10MA Working current 40MA Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC Specifications: Color: Picture Color Size: 5.4*2.7*1.9cm Package Included: 1 * Fish Tank Aquarium Automatic Water Supply Controller Note: Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! 12V Water Level Automatic Controller Liquid Sensor Switch Solenoid Motor Pump.We'd like to settle any problem in a friendly manner. LOW : Lower limit probe. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. Color: Picture Color.