Feature: 1. Designed to control the relay and then control to pump water or drain away water. 2. Mini size, easy wire connection. 3. Powered by 9V-12V AC/DC. 4. Low power consumption, strong anti-interference performance. 5. Great for pool or water tower to control the water level. 6. The water level controller is designed to control the relay and then control to pump water or drain away water. 7. The liquid level controller is mini size, easy wire connection. Specification: This product is designed to control the relay and then control to pump water or drain away water according to water level. It has so many advantages, such as mini size, easy wire connection, low power consumption, strong anti-interference performance, etc. Features: Designed to control the relay and then control to pump water or drain away water. Mini size, easy wire connection. Powered by 9V-12V AC/DC. Low power consumption, strong anti-interference performance. Great for pool or water tower to control the water level. Notice: The product is not equipped with probe, don't need to buy probe neither. Just strip the electric wire 2cm to instead of probe, make it become bare wire then can induce directly. Specifications: Power Supply: 9V-12V AC/DC Relay: 10A PCB Size: 60 * 49mm Product Weight: 29g Package List: 1 * Water Level Controller Package List: 1 * Water Level Controller