12v delay relay module car start delay switch with optocoupler signal trigger time adjustable

Working principle: This module is an external signal triggered delay module.
具体为：1）--到->2)--到->3)--到->4) .

• 1) Power the module (12v or 5V), and the relay immediately closes (at this time, the output terminal of the module is in the state of normally open and common conduction, normally closed and common disconnection)
   
• 2) After a delay of 0-25 seconds, the relay will disconnect (at this time, the module output status is: normally open and public disconnected, normally closed and public conductive)
   
• 3) Keep disconnected until an external trigger signal is triggered, and then the relay will be pulled in again
   
• 4) After successful triggering, the relay will disconnect after a delay of 0-25 seconds. Note that if the trigger signal persists, it will continue to be engaged until the trigger signal disappears. The module will then begin to delay timing and disconnect after a delay of 0-25 seconds. (At this point, the relay returns to its pre triggering state of normally open and common open, and normally closed and common conductive.).

Additionally, the trigger signal for this module can be provided by a separate power system, and the module's power supply may not be from the same power system. At the same time, the trigger level can be a high-level pulse or a low-level pulse, making it highly versatile

Module TE point:

1. Length * Width=52mm * 16mm

2. The working voltage of the module is 12V