Description Specifications: Model: XH-M203 Working voltage: AC/DC12V Output capacity: 10A Output type: relay output Control type: full automatic Size: 6x3.8cm/2.36x1.50inch Installation: M3 screw hole Applications: When the water level is higher than the upper line, it will stop to add water automatically, no need for manual management, full automatic. Easy installation, and simple to operate. Widely used in water conservancy project, water tower, water bucket, water for tank, water pond, etc Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Pc x Water Level Controller