and high quality Feature: Made of fireproof ABS material, durable, firm and has a long service life. Automatically turns on or off the power supply of electric devices based on the set water level. Fast induction, high sensitivity, timely control of water level. Effectively protects the water pump, extends service life, and ensures efficient operation. Automatic water replenishment and drainage; easy to install according to the manual. Indicator light design: red light for power, green light for output. Two optional configurations: with switch or without switch, simple to operate. Suitable for sewage disposal, home water pumps, water towers, pools, production equipment, and other applications. Specifications: Item Type: Automatic Water Level Controller Material: ABS Size: 92x66x49mm / 3.6x2.5x1.9in Color: Grey Optional Types: A, B, C, D Control Distance: less than 50 meters Rated Current: 30A Rated Voltage: 220V Quantity: 1 PC Note: 1cm = 10mm = 0.39inch Allow 0-1cm error due to manual measurement. Please ensure you are comfortable with this before purchasing. Due to monitor differences, the image may not reflect the actual color of the item. Thank you. Package Includes: Type A: 1 x Automatic Water Level Controller Type B: 1 x Automatic Water Level Controller, 3 x 2m Sensor Type C: 1 x Automatic Water Level Controller with switch Type D: 1 x Automatic Water Level Controller with switch, 3 x 2m Sensor