Features: Widely used and easy to operate Small size and stable performances Voltage specifications can be selected as 5V/12V Module function: Automatically pump water when the water level isbelow probesB. Stoppumping when the water level reaches theC probes. A/B/C water level sensing line can be used with ordinary wires, with the wireend exposed for 5cm. Automatically pump water when the water level is belowpoint B Stoppumping when the water level is above point C Specifications: Product Name: Automatic Water Level Controller Specification: 5V/12V Module size: approx 5x4x1.8cm/1.97x1.57x0.71in Quantity：1PC Net weight: 24g Package Includes: 1PC Automatic Water Level Controller note: There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolution