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, and timely water level control. Effectively protects the water pump, extends its lifespan, and ensures efficient operation. Supports automatic water replenishment and drainage. Easy to install according to the manual. Indicator light design: red light indicates power, green light indicates output. Two optional configurations: with switch or without switch, both easy 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 PCNote: Transition: 1cm = 10mm = 0.39 inch Please allow 01 cm error due to manual measurement. Ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the image may not reflect the actual color of the item. Thank you.Package Includes (Optional): 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