sixwheeledbeast

Two live boxes could have been too much current and blown something. Most panels need additional PSU's or SCB mode for multiple sounders.

An additional power supply is not required and you do need the correct expander card. I would still use Low Current and/or SCB mode on the bell myself to reduce the current drawn by the sounder. The expander card comes with instructions, it requires an EOL resistor in the sounder but other than that it's simple. Yes, the GSM sends the same type of signals as PSTN, text message have zone information which is good. You have to set them up correctly with test signal enabled otherwise the SIM will expire. This is a one-way systems so not the most secure, would have to be a low risk site IMO.

IIRC on an ELite 24 the default programming for Pin 3 is Intruder Alarm.

Digicom Output 3 if you don't fancy doing any programming.

Yes I have had this a couple of times, I really fail to see how Green is a positive colour. For the record Red, White, Yellow and Orange are positive colours. As for using green and white for voltage in the first place, IMO it's wrong.

There normally always a domestic customer that ask for a first call or early AM. I agree it is wrong, but is the grass greener? Agreed As I have said previously if I was tired enough for it to effect my driving I'd phone in as not fit to drive.

I am sure we've covered this before. Some places don't care what you did last night your still expected in for half 8.

Correct. Tunstall is the name of the anti-code on most Cooper stuff.

New rules made the requirement of the anti-code's reply the same as the codes to unset IIRC. So a 4 digit is required for Grade 2 and a 6 digit is used for Grade 3 However 4 digit anti-codes are used long before 2004. I still don't see how you can get the mapping from only one complete pair. Have you looked into any other popular ones? Tunstall or Texe for example.