... - bands, GSM 850 Mhz ,900Mhz, 1800Mhz and 1900Mhz, 7.The picture can be adjusted to QCIF (160x128), CIF (320x240), VGA (640x480 ... . 19.Easy use controllor to alarm,disalarm, emergency call ,take picture and so on 20.Support all kinds of wireless detectors ...