Model: XH-M203 Working voltage: AC/DC12V Output capacity: 10A Output type: relay output Control type: full automatic Installation: M3 screw hole Applications: When the water level is higher than the upper line, it 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 tank, water pond, etc colour:blue Material:Metal +pc Size: 6x3.8cm/2.36x1.50inch Package Contents: 1 * Water Level Controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.