Specification: new Wiring: 3 wires White: Positive Black: Negative Green& Yellow: Ground Relay Capacity: 220V AC 10A. Fluid Temperature: 80 degrees Socket type: International three flat pins plug Overall Size (approx.): 85x52x112mm One is 88cm; the short one is 35cm. Package Size (approx.): 12x9.3x9.8cm (LxWxH) Long Life: can be used continuously for more than 20 million times. Working Pressure Range: 0-10 Bar, matching with all pumps Cable length: the Long Output signal: active output, to provide pump 220V, start the pump below 1.5KW directly. Features: Pressure transmitter inside, stable and accuracy. Switch of the pump during water shortage and on with water. MCU micro-computer process chip, safe and intelligent control. One-click set up on/off limit. Installation: If the pump doesn't have a check valve, then a check valve must be installed in front of the pressure, in this case the pump may on/off ,or frequently. When you turn on the tap water, if the pump is on/off time to time, please adjust the H valve to a larger valve. If the pump keep runs with stopping, please lower the H valve, on the other hand, if the pump doesn't work, please set the L valve higher. Package Included: 1x Digital Switch Controller 1 x English user manual Note: Professional Installation Is Highly Recommended Please check the size measurement chart carefully before making payment. Please allow minor error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. _x000D_ _x000D_ _x000D_