What sim card do I use in my control panel?It has to be 2G voice compatible. Related Posts How do I dial in or test the dialler function on my control panel? How do I dial in or test the dialler function on my control panel? Does my smartphone need an active sim card? The camera does not recognise the SD card. How do I add more users to control the alarm? How do I clear the fault log, warning triangle or warning beep on the control panel?