GSM Alarm System (2 bands) - NCHM-910 (2 bands)

Inactive infrared intruding detector (up to 10), wireless door/window gap detector (up to 10), wireless remote controller (two or more), have 5 groups dialing (two times in turn), voice alarm and live monitoring, remote control and emergency alarm, monitor the voice in home when alarm, you can program your 4 groups text messages in the home base with UPS, continues to work for 48 hours once power disconnect, support 2 frequency: 900MHz, 1800MHz