Brand New and High Quality Brief Description: Size: 6.8cm x 2.1cm Main Chip: NE555 Operating Voltage: 12V Features: 1. Time Delay Relay: A 12V power supply is provided to the relay. The relay doesn't engage immediately. The relay output states are: normally open, normally closed, and common drive. After a 1-10 second delay (adjustable), the relay engages. During this time, the output states are: normally open and common drive, normally closed and common disconnect. This state is maintained by the uninterrupted power supply module. 2. Adjustable Delay Time (0-10 seconds) 4. Increased potential increases delay time. 5. Increasing capacitor C1 increases delay time. 6. Input power indicator. 7. Relay indicator. 8. Controls AC 220V/10A equipment (maximum 2000W). 9. Freewheeling diode for relay protection. 10. Time delay formula: T = 1.1RC. Example: For a 100µF capacitor and 100K resistor, T = 1.1 * 100000 * 0.0001 = 11 seconds. Applications: 1. Vehicle delay-on unit to prevent power surges when turning on vehicle accessories. 2. Prevents simultaneous startup of multiple devices to avoid excessive current draw and potential damage to equipment. Quantity: 1 pc