1. Water level detection switch supports DC/AC 12V power supply
2. Application: suitable for water tower pool, fish tank or other liquid level control system
3. 1 channel relay on board for controlling the connected water pump to pump or dewater
4. Just ordinary wire can be used as a liquid level sensor (both ends need to be stripped 2cm long), easy DIY
5. Small size, easy wiring, low power consumption, large switching capacity, strong anti-interference, high functional stability
6. It can realize the pool (water tower) automatically turn on the water pump (solenoid valve) to pump water when the water is short of water, and automatically stop the water pump (solenoid valve) when the water is full
7. Size: about 6 x 4.4 cm