Balcony vegetables soilless hydroponic nutrient solution timer system controller automatically switches

Usage: The timer power red light, red for the shutdown instruction, green light for turning on the power. Power outage time to adjust and control the pump cycle downtime and uptime. A timing protection is set to open two knobs, downtime, for example: Set the boot 20 minutes, stopping 40 minutes, turn the knob arrow points to 20, down arrow points to spin 40, over 40 minutes or so green light, red light off The water pump starts working cycle, turn off the green about 20 minutes, the red light, the pump stops working after a time will alternately open, stop.