not too bad then. Not something ive had to do tbh, but handy to know,

https://www.securitywarehouse.co.uk/catalog/genie-24vac-to-12vdc-power-converter-p-3756.html

 

The Samsung bullets maybe dual powered, most of them are, same trouble I had so switched to ac psu's , so no need for convertor

or variable psu

or variable psu

Problem here would be current then , increase voltage won't give you increase current or have I mixed that up?

no, increase the voltage it (dc) will half the current demand, ac theory is more log vs the lin of dc. DC is easier as its pure ohms law, Ac theory adds a little more ie impedance but its similar, ish

Ac theory always did confuse me lol

As does alarms

Lol.

Doh!