Feature: 1. A short voltage pulse is input at the trigger terminal, the module starts immediately (relay pull-in), and the relay turns off after a while. The input signal is invalid again during the delay. 2. The optocoupler completely isolates the input 1mA current, and the voltage above 2.0V can be driven. Keep the voltage for more than 20V for a long time. 3. A set of normally open + normally closed output form. 4. Adjustable delay length is from 0.2 seconds to 100 seconds. Other time ranges can be set. 5. There are 4 gear delay ranges are available, optocoupler isolation, high security. Specification: Item Type: Delay Timer Relay Module Working Voltage: 12V DC, adaptable range (10V-16V) Working Current:: 50mA (static 5mA) Switching Capacity: 10A (0~250V AC or 0~30V DC) Output Form: A set of normally open + normally closed (ie dry contact) Input: The optocoupler completely isolates the input 1mA current, and the voltage above 2.0V can be driven. Do not keep the voltage for more than 20V for a long time. Signal Voltage Range: DC 3-30V Response Speed: 20mS (20ms) Delay Length: Adjustable from 0.2 seconds to 100 seconds. (Other time ranges can be set) Delay setting method: x10 shorted, x100 shorted indicates 1-10s range x10 shorted, x100 not shorted indicates 1-100s range x10 not shorted, x100 shorted to indicate 1-1000s range x10 shorted, x100 shorted indicates 1-10000s range Adjust potentiometer R4 at this time, adjust the time Package List: 1 x Delay Timer Relay Module