①. Feature: ②. Made of fireproof ABS material, durable, firm and has a long service life. ③. It can automatically turn on or off the power supply of all electric devices according to the water level the users set. ④. Fast induction, high sensitivity, quick control the water level in time. ⑤. Well protect the water pump, extend the lifetime, let it work efficiently. ⑥. Auto water replenishment and drainage, easy to install according to the manual. ⑦. Indicator light design, red light for the power, green light for output. ⑧. Two patterns optional: with switch or without switch, easy to operate and use. ⑨. Suitable for sewage disposal, home water pump, pump, water tower, pool, production equipment, etc. ⑩. Specifications: ⑪. Item Type: Automatic Water Level Controller ⑫. Material: ABS ⑬. Size: 92x66x49mm/3.6x2.5x1.9in ⑭. Color: Grey ⑮. Optional Type: A, B, C, D ⑯. Control Distance: less than 50 meters ⑰. Rated Current: 30A ⑱. Rated Voltage: 220V ⑲. Quantity: 1 PC ⑳. Note: ㉑. Transition: 1cm=10mm=0.39inch ㉒. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. ㉓. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you ㉔. Package Includes:(Optional) ㉕. Type A: 1 x Automatic Water Level Controller ㉖. Type B: 1 x Automatic Water Level Controller ㉗. 3 x 2m Sensor ㉘. Type C: 1 x Automatic Water Level Controller with switch ㉙. Type D: 1 x Automatic Water Level Controller with switch ㉚. 3 x 2m Sensor