Do you know the exact model of that PIR? It’s a Detection Systems one right? A bit like the Tri-Tech DS series. I haven’t been able to find any info on them anywhere. Edit: it’s actually an IQ220/260 made by Intellisense.
I see you're too used to Vistas :P For the record, COMMAND 4 silences troubles, not entering your code + enter. also, code + enter silence and disarms, code + escape silences without disarming. code + escape is also used to clear the display (basically system reset). also also COMMAND 47 resets smoke detector alarms Cool to see a Radionics system in the UK though