12V Automatic Pumping Water Drainage Circuit Board Liquid Level Relay Water Level Switch Sensor Controller

This product controls the high current relay based on the water level of the pool (water tower). It has the characteristics of small size, simple wiring, low power consumption, large switch capacity, strong anti-interference, and high functional stability. It can stably realize the automatic start of the water pump when the pool (water tower) is short of water, and automatically stop the water pump when it is full.This product does not need to purchase a probe separately, and can be replaced by household wires.Note: The so-called probe is a wire with a plastic mesh shell to buckle the wire head. It can be directly sensed with household wires. Strip the wire head about 3 cm to make it a bare wire for direct sensing. For longer durability, it is recommended that the contact point of the wire head contacting the water is stainless steel! !In addition: This product does not come with wire (probe)Shipping list: 1* liquid level control circuit board (without probe wire and accessories)The probe is a micro-electric signal that has no effect on humans and other organisms and is absolutely safe)This product does not need to purchase a probe separately, and can be replaced by household wires.Note: It can be directly sensed with household wires. Strip the wire head more than 5 cm to make it a bare wire that can contact water for direct sensing.Of course, for more durability, it is recommended to use aluminum wire or stainless steel for the contact points!Working principle: When two of the upper s, middle z and lower x probes leave the water, the relay is closed; when the upper s, middle z and lower x probes are all in the water, the relay is disconnected!!!!!