... modify.> The way of alarm sound, recording, monitor, and remote control, alarm telephone number, telephone line testing, AC power ... area arming, force arming, timing arming,and remote control arming (only VS816-08 and VS816-16 have this function).> 6 ... module.>can customize output: relay output, remote control output (mainly used to monitor and control the linkage of electricalappliances, light, etc.), ...