It's great that a manufacturer is on here answering questions tbh, so thanks.
Not a trick question now, but did the introduction of SMPSU mean a component reduction on the PSU side of the alarm PCB (or later/future PCBs)?
Also re. tech helpline, do you prioritise 'trade' over 'DIY' calls? I wonder if you did it would go some way towards appeasing trade customers.
But, rather than trade being anyone with dazzasalarms@gmail.com registering on a website, it should be someone that has done a minimum of 1 training module with Texe (or had a rep round?)
I also know that a LOT of such calls are for stuff people really should know or people asking what end of the wires the EOL resistor goes etc...