Ming said:This product can replace the complex installation of automatic water pump (pressure gauge, pressure switch, tee, check valve, pressure tank). With stable performance, less maintenance, long life and other characteristics. When the product is connected to the Power grid, the green light indicating \"Power on\" will be on. A yellow light indicating \"Pump on\" indicates that the Pump has started. The pump continues to operate for a few minutes, starting the system to fill the pipe and reaching the required pressure. If that time is not enough, a red light indicating \"Failure\" is displayed. At this point, turn on the faucet and press the Restart button until the red light goes out. Once the tap is turned off, the product will keep the pump at maximum pressure.