Features Made of alloy and ABS materials, anti‑corrosive, the structure is very sturdy, and durable for long‑term use. Designed to automatically and quickly start and stop the the water pump, and maintains pressure and flow. When the system pipeline pressure reaches the upper limit, the power is automatically cut off and the water pump stops working. When the pressure reaches the lower limit, the power is automatically turned on and the water pump starts to work. The automatic control is very convenient, which is safe and reliable and also requires no manual operation. Very simple to install with small size and light weight, and the low power consumption will save the energy. Specification: Item Type: Automatic Water Pump Pressure Switch Material: Zinc Alloy + ABS Function: Automatic water pump pressure switch. Model: JSK-3A Rated Voltage: AC125/250V Rated Current: 15/10A Maximum Working Pressure: 100000-500000 (Pa) Interface Thread: 3/8in Female Thread Pressure Range: 2.2-3.0kg/cm² Power: 750W Package List:1 x Automatic Water Pump Pressure Switch Note:Do not use it outside the current and voltage range. Package List 1 x Automatic Water Pump Pressure Switch