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Cheers Sparkymarka, that's good advice. I've got an EE sim ready to go.

I've reset the whole system so I've got the installer code. I'm unsure how to programme the unit, so any advice (in a step-by-step format for the hard of thinking) would be appreciated. I've not heard of a security SIM, but will investigate.

Hi, first post here. I've got a PowerMaster 10 with GSM 350 supplied by ADT. I have dropped ADT and want to use the alarm as a stand-alone system with the system contacting my mobile in case of alarms, faults etc. If i put in my own pay-as-you-go sim, how do i programme my contact number (the...