Specification: Origin: Mainland China Voltage: 12V Maximum current: 10A Module size: 50.00x43.00x18.00mm/1.97x1.69x0.71inch Net weight: 24g Material: mixed material Application scenarios: Automatic water supply system for water supply tower Water supply system for aquarium fish tank Conductive liquid water supply system Automatic control of livestock and poultry Automatic water supply system for farms Automatic water supply and water exchange in places where water supply is required Automatic control of solenoid valve, water pump and motor Wiring instructions: A/B/C water level sensing wires can be made of ordinary wires, with 5cm exposed at the ends of the wires. When the water level is lower than point B, water will be automatically pumped, and when the water level is higher than point C, water will stop pumping. Note: A contactor is required for water pumps above 2000W. Module function description: When the water level is lower than the B probe, water will be automatically pumped. When the water level reaches the C probe, water will stop pumping. A/B/C water level sensing wires can be made of ordinary wires, with 5CM exposed at both ends of the wires. When the water level is lower than point B, water will be automatically pumped. When the water level is higher than point C, water will stop pumping. Note: The package does not contain a probe (cable). There is no need to use a special probe. The probe can be made with a household cable. For safety reasons, please use a well-insulated AC/DC power supply. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1*Water Level Automatic Controller Relay 1.Easy Installation: Setting up this water level automatic controller relay is a breeze with the help of an intuitive wiring diagram, ensuring a hassle-free installation process even for those without technical expertise. 2.Stable Performance: Engineered for reliability, our liquid sensor switch relay board module maintains precise control over water levels, offering peace of mind with its consistent and dependable operation. 3.Compact Design: The small footprint of our liquid sensor switch control relay board makes it an ideal companion for a variety of devices, ensuring easy integration without requiring extensive space. 4.Versatile Applications: Developed with the diverse needs of households, factories, and mines in mind, this automatic water supply controller module is versatile enough to adapt to a wide range of water usage scenarios. 5.Automatic Regulation: Our solenoid valve motor pump automatic control relay allows for automatic water pumping when levels are low and stops pumping once the desired water height is reached, optimizing water management without manual intervention.