Don't worry stick around long enough & you will soon pick up the habit
"two way" define what you & your "electronic's boffin" expects under the term, along with why an "XYZ" falls short
I popped on site today to drop in a loan monitor,
I've seen the 9448 in one office before, there's a paxton switch 2 system by the same co. in the other office there a Modern branded 9500 which does a couple of fire doors massively over specced !
back in 1994, I'd have put money that in 2015 if I was still daft enough to be doing alarms nobody would want low end plastic controls with the old fashioned led display.....
guess which ***** is swapping a early 90's 9448 for a 9448 next week ?
your share tip is still 24p or 40% ish down
too dear, std don't allow, I reckon the most domestic will remain cheap 9448's or cheap to fit radio systems
spend the £1 & show us how's it done... however I'd assume- you'll need to convert 12-5v to power it then, open collectors operating at 5v would need a relay for the galaxy ? used as an alarm shock sensor, as unstable as the middle east...
add a volt free relay on the pi to operate when the shock does
if there's a dispute drop off the old board & the rkp (if requested)& I'd default it within 7 days. FOC unless moneys owed then could get stuffed
You can't have really secure engineer codes, its always going to be a comprise