Description: The base is equipped with 3/4 inch and 1 inch screw guides for direct mounting, and an L-shaped bracket is attached for flat installation. It has two circuits A and B, the A terminal is used for water supply, and the B terminal is used for pumping water. Made of plastic high quality material, it is durable and easy for you to carry. The diameter of the floating ball is 52mm, the height is 103mm, and the length of the switch is 70mm, the width is 50mm, and the height is 122mm. It can be used for pool, oil, weak acid and weak base in water or oil tank, etc. Item Name: Water Level Controller Switch Material:Plastic Ambient Temperature: 4 Degrees Celsius~80 Ddegrees Celsius Sink Pressure: Equal to Atmospheric Pressure Size:7cmx5cmx12.2cm/2.76inx1.97inx4.8in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 2 X Floating Balls 1 X Water Level Controller Switch