Do one bellbox first,contacts with built in resistors maybe easier for you
Would be fourth terminal from left little bell symbol is the trigger to go into the bell input on the bell
The little star is the fith which is strobe
I thought it was when you put an LCD on other versions , ie led keypad still required bit LCD has funny display which allows key inputs but nothing displayed , just code on and off
I use cardboard boxes, moving crates, all kinda stuff, just not disciplined like you guys , housing bashing is the way forward give it up!
Or try to squeeze as much as I can I to a twin makita drill box standard , screws spilled all inside to