maybe I'm doing it wrong but I'd switch lives rather than neutrals
you'd probally find the door opener with have a slev input to prenvet door from opening
Pic shows a TS790.Star Keypad, which may be connected to any of the TS Networker panels
IIRC the square keypads haven't been made for 18 yrs & its replacement the netstar has'nt been made for about 10 yrs,
There isn't any 2nd hand ones or new old stock currently on ebay,
Using the keypad change the exit mode to something different eg- Exit terminate
exit engineering, got back into engineering & change it back to times exit & see if it works ?
I liked the MASSIVE gardtec speakers & internal sab's
If fact stuff keeps changing & getting worse, think dopey sounders with all the fixing points with little discs that spin around....
I love hunting high & low in garden in the pi$$ing rain to find the ones thats pinged off