and high quality 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 water level set by the user. Fast induction, high sensitivity, and timely water level control. Helps protect the water pump, extends pump life, and ensures efficient operation. Features automatic water replenishment and drainage. Easy to install following the manual. Indicator light design: red light indicates power, green light indicates output. Two options available: with switch or without switch, both easy to operate. Suitable for sewage disposal, home water pumps, pumps, water towers, pools, and production equipment. 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 piece Note: 1cm = 10mm = 0.39 inch. Slight measurement deviation of 0-1cm may occur due to manual measurement. Please consider this before purchasing. The actual color may vary slightly due to monitor display differences. 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