I think you might even be able to install it with the existing wiring.
It appears you have:
- 12V DC power from the left 2 red wires?
- 2 white wires on the left from a momentary 2-terminal push-button switch?
Most digital timer modules of this ilk have a relay capable of 10 Amps of switching. So if the existing standalone relay itself fails at some point, you can re-wire to use the timer module's relay. I suspect the existing timer module's relays were not up to the current requirements.
This module does require a one-time programming exercise to set the time delay to however many seconds or minutes in response to the pushbutton. It can be exasperating as the instructions are no doubt translations. Definitely not as simple as turning the knob on the existing module to set the time interval!
As indicated earlier, I get these from eBay-Asia for less than $5 shipped...but it does take a few weeks. I see the same or at least very similar modules on Amazon with U.S. shipping for around $10 each.
If I understand your application, there are many timer modules that will do the job. If you go with the particular timer shown I am quite familiar with its operation.
