The AD830 alarm control panel uses GSM and telephone lines for alarm communication. Users can select either GSM or telephone line priority. The panel checks GSM signal strength and allows remote arming, disarming, and status checks via calls or SMS messages to the panel's GSM number. RFID cards can be programmed to send SMS messages when swiped. The panel can also make outgoing calls. Proper power is required for the GSM module to function correctly.