Feature: 1. Build‑in pressure transmitter, sensitive reactions, high‑accuracy, good stability. 2. Using single chip microcomputer processing chip, safe and intelligent control, easy to operate. 3. Convenient to switch the water pump during the water shortage period and when water is being used. 4. Water pump pressure switch, supports one‑key setting of on/off limits, which is easy to use. 5. Good water resistance, easy installation, widely used in shower boost pumps and water pumps. Specification: Condition: 100% Brand New Item Type: Water Pump Pressure Switch Material: Plastic + Metal Color: Yellow + Black Weight: Approx. 393g / 13.9oz Current: 10A Fluid Temperature: 80℃ Waterproof Rating: IP66 Working Pressure Range: 0-10 Bar, matching with all pumps Long Service Life: Can be used continuously for more than 20 million times Size: Approx. 52x85x112mm / 2.0x3.3x4.4in Wires Connecting: 3 Wires White: Front Black: Negative Green and Yellow: Ground Installation: 1. If the pump does not have a check valve, a check valve must be installed before the pressure. In this case, the pump may often turn on/off. 2. When opening tap water, if you turn on/off the pump from time to time, please adjust the H valve to a larger valve. 3. If the pump keeps running in the stopped state, please lower the H valve. On the other hand, if the pump does not work, please raise the L valve.. Package List: 1 x Water Pump Pressure Switch1 x English Manual Note: 1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Just the above package contents, other products are not included.