HiLetgo NE555 DC 12V Delay Timer Switch Adjustable Module 0 to 10 Second Main Chip:NE555; Operating voltage: 12V DC. The delay time is adjustable (0-10 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).