Specification: Brand new Wiring: 3 wires White: Positive Black: Negative Green& Yellow Ground Relay Capacity 220 AC 10A Fluid Temperature 80 degrees Socket type International three flat pins Overall Size (approx.): 85x52x112mm One is 88cm; the short one is 35cm. Packa Size (approx.): 12x9.3x9.8cm (LxWxH) Long Life: can be used continuously for more than 20 million times. Working Pressure Ran: 0-10 Bar, matching with all pumps Cable length: the Long Output signal: active output, to provide pump 220, start the pump below 1.5KW directly. When you turn on the tap water, if the pump is on/off time to time, please adjust the H valve to a larr 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. Packa 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. eletronic pressure controller, Switches, Switch & Switch Accessories, Electrical Equipment & Supplies Related Products:pressure controller,water pump pressure switch,water pump with pressure switch,automatic pump,automatic pump control,water pressure switch Pressure transmitter inside, stable and accuracy. Switch of the pump during water shorta and on with water. MCU micro-computer process chip, safe and intellint control. One-k 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.