... Server One channel CIF, one channel D1,2 channels CIF, 2 channels D1, 4 channels CIF,4 channels ... D1 IP/Wifi IP Video Server 1/2 channels optional AESUN Optional model: One channel CIF ... , one channel D1,2 channels CIF, 2 channels D1, 4 channels CIF, 4 channels ... ( 0 - 2km ) Wireless 3G module (EVDO/WCDMA/TD-SCDMA)- Highly reliable special DSP solution, super powerful RTOS, ...