This round float switch water level controller provides automatic liquid level control for tanks. It features a 2-meter cable, operates at 220V, and is rated IP68 for reliable waterproof protection. Compact design with simple wiring and low power consumption. Offers reliable switching performance, strong anti-interference, and stable operation. The housing is made of corrosion-resistant materials. Easy to install and use, with long service life. Widely compatible with water supply, drainage, and automatic liquid level control systems using various pump types. The float ball is made from high-quality materials that withstand high and low temperatures without releasing harmful substances. Thickened wire core increases load capacity and reduces heat buildup. Specifications: Rated Voltage: AC 110/220V Frequency: 50/60Hz Protection Level: IP68 Maximum Current: AC16(4)A Maximum Operating Temperature: 60°C Wiring Instructions: 1. Automatic Water Replenishment Mode: Connect the blue wire to the water pump, black wire to neutral, and isolate the brown wire. 2. Automatic Drainage Mode: Connect the brown wire to the water pump, black wire to neutral, and isolate the blue wire. Package Includes: 1 piece