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DC 12V Delay Relay Shield NE555 Timer Switch Adjustable Module 0~10S
Size: 6.8cm * 2.1cm Main chip: NE555 Working voltage: DC 12V Features: 1£¬ Power relay delay pull. Specifically: 12V power supply to the relay£¬ the relay will not immediately sucked and status relay outputs are: normally open disconnected public£¬ normally closed and public conduction; wait until the delay 1-10s (adjustable)£¬ the relay suction and£¬ this time£¬ the relay output status is: normally open and public conduction£¬ normally closed and public disconnected; as long as uninterruptible power module£¬ this state will remain. 2£¬ The delay time is adjustable£¬ (0 to 10 seconds) 4£¬ Increasing the potential can increase the delay time 5£¬ Increasing the capacitor C1 can increase the delay time 6£¬ With input power indicator 7£¬ With relay indicator 8£¬ Can control AC 220V / 10A about equipment. (Maximum control equipment 2000W) 9£¬ With freewheeling protection relay. 10£¬ The delay time formula: T = 1.1RC. For example: a resistor capacitor 100uf 100K T = 1.1 * 100000 * 0.0001 = 11 seconds