GERI Relay Module 12v Delay Switch Ne555 Module Timer 0-20s The product is registered Trademark by GERI&reg; . Power relay delay closure.Size: 55mm X30mm X 18mm,operating voltage: 12 volts DC the delay time is adjustable (0-20 seconds), delay turn on. the potentiometer to adjust the output frequency with input power indicator, with the relay is energized light can be controlled AC 250V/10A /DC 0~30V/max. 10A equipment. (Maximum control equipment 2000W)