I am building my home alarms systems.
what is the solution to read 12V analog inputs with an arduino ?
I don't want to use a resistor dividers circuit, is there a hat card or a solution to plug 12V analog input and be able to process it with arduino?
I need about 4 analog inputs for 4 alarms zones
Each alarms zones with contains reed switch and passive infrared sensor.
addon: if that card could have relay to power siren it would be great !