PiSector 4G Cellular GSM Wireless Security Alarm System Support 2G/3G/4G network GS07-M12 Absolutely wireless alarm system. Simply plug the main unit to a power outlet and all other sensors are completely wireless.User can self-monitor the system anytime anywhere via your cell phone .Auto-dial function calls up to 6 number in case of alarm. "Silent Alarm Mode" calls out discreetly suitable for shops or in life-threatening situations. Chime function to notify you of guests entering or child opening door/window. "Door/Window Is Open" auto-detector to prevent you from arming the system while a door or a window is open before you leave home. You can override it with long press on the ARM button.., Stylish door/window gap detectors with strong 3M double-sided sticking tape for easy installation Microprocessor-controlled pet-immune sensors for detecting motion of objects above 50 lbs with pre-analysis before alerting to minimize false alarms. Name each sensor with up to 28 characters to help identify them easily for later editing with auto-search feature. Loud wireless indoor siren alerts neighbors to deters potential intruders.Volume adjustable function with mute to hide the console so an intruder cannot find it and smash it. Wireless indoor siren will keep you informed of status of the system with colored LED light. Power Outage Warning, system will use backup battery to call you in case of power outage. Daily Arm/Disarm Schedule allows you set a schedule system for auto-arm and auto-disarm.