stan2004 posted:For the 1/2 sec pushbutton, I'd try a so-called "Delay OFF" 12V relay module. The idea is you apply 12V to the module, this immediately closes its relay for some settable time, then the relay opens and remains open as long as 12V is applied. Obviously, when 12V removed, the relay stays opens as there's no power to close the relay. For example, Ebay # 132102329553 though there are dozens of sellers of the identical item.
So this relay module would go where the plain 12V relay module went in rtr12's photo. In this case the module has a screw-driver adjustable delay of 0 to 10 sec. It's also on Amazon for a bit more. Or use the search terms "Delay off 12V relay module" and you'll find additional options.
I see this module labels the 3-relay outputs CB COM CK instead of NC COM NO as labeled on the ITSD. For the push-button application you want the two terminals COM and CK going to the push-button.
Bear in mind I don't have this specific Delay module but I believe it will do the trick.
When I get the delay relay board I will be doing the same thing as RTR12, not populating the relay on the sensor board and jumping to the delay board from the pads for the relay. Correct?
