The USC811 system is ideal for intruder detection, home security and 24-hour security presence. It can meet current and future requirements. With a built-in 868 MHz/923 MHz transceiver module, the USC811 system operation range is up to 250 meters, including eight wireless intrusion zone and two wired zones. A powerful 110-decibel alarm can effectively warn the householder and scare the intruder. The whole system includes a 10-area zone LED control panel, a motion sensor, a door/window contact detector and a remote controller. Moreover, 60 wireless devices maximum can be connected, such as keypads, solar sirens, GSM dialers, flood detectors, glass-break detectors and IR beam detectors.