Description JK11 Adjustable Cycle Timer Delay Relay On/Off Switch Relay Shield DC 12V Timer Delay Relay Module (0-120min） Features: 1. The time is controlled by an industrial-grade single-chip microcomputer, with high precision and stable performance; 2. Two adjustable resistors are used to adjust the time, which can independently adjust the on-time and off-time; 3. The external trigger starts, use the self-reset button to short-circuit it to start the timing. You can also short-circuit the triggers together to realize the countdown when the power
