sixwheeledbeast

We have no idea what model panel you have but seems like you have a tamper fault which will need diagnosis. Understanding electronics and owning a multimeter would be a starting point, there's live electrics inside the control box.

I don't think much has happened in printer tech within the last 4 years. I've never rated Lexmark. I've still got my Brother colour laser and I still rate them, just like I've had good Kyocera lasers in the past. A lot of people seem to be getting big colour photocopiers for work instead of printers. For inkjet refillable tank types are becoming more popular.

There is some volume adjustment in the Master User menu but it's less flexible than the engineers options.

Not my system of choice but used a good few over the years they're functional. Powermaster is all 2 way, not the same as the discontinued Powermax. I believed ADT had custom firmware after they took on Visonic, so doesn't default to the off the shelf codes. If that's the case looks like you'll need ADT to reinstall everything, expensive mistake following random stuff online... You can enroll/delete keyfobs from the master user menu it's not an engineer/installer only function.

That's fine. Just note that if your using a PAYG SIM you need to make sure it doesn't expire by sending messages regularly. Also you'll have to keep an eye on the signal to make sure the network is still working. Pretty much all mobile providers have set dates to decommission older phone masts, some have started already. You can't rely on your mobile phone signal as a tell, it will likely use 4G assuming your phone is newer than your alarm... Monitoring has the benefit of polling which continuously checks the device can send/receive messages for those times you need it.

The better solution would have been to upgrade the panel to something with more modern connectivity. PSTN and GSM are both planned to be discontinued in the near future. A new panel could connect to services like notifications or monitoring and also have an app to provide remote control of the system. Pretty much all manufacturers charge for this service and require a registered installer to fit them.

I'm sure it will be in the manual, the GJD ones are * key from memory. Just hope your mobile network of choice doesn't update now...

I don't see why not.

I don't mind the blue light...

Yes, the LED is blue on the Bosch if that's an issue.

Maybe read the post again....

Anything but the Capture from Texecom are cheap tat IMO. Optex, Texe Capture or Bosch for me, has to have sealed optics.

Premiers have separate programmable volumes for chime and advisory tones