4 channels encode video server
Frame rate: PAL: 1-25fps.NTSC: 1-30fps
Video codec: MPEG-4
Audio codec: ISO-MPEG Audio Layer-3
Size: CIF: 352 x 288
Video bit rate: 32kbps-3mbps
Video stream channel bandwidth: 200kbps (352 x 288, 25fps per 1ch) 
Delay time: less than 200 MSEL (0.20 second) in Lan system
Image Resolution: Real-time monitor 704 x 576 (P) 704 x 480 (N) 704 x 288 (P) 704
x 240 (N) 352 x 288 (P) 352 x 240 (N) 
Image adjust: brightness, contrast, chroma, saturation, image quality can be adjusted.
Video recording speed: Output frame rate is 30fps at most and network bandwidth usage is 32kbps at least
Interface: RS485 P/T/Z decoder interface/RJ-45 10M/100M Ethernet interface/COM
Network Protocol: TCP/IP/UDP/MULTICAST
Network transmission mode: ISDN/ADSL/LAN, WAN
Built-in Web NV: it fully supports IE monitoring, configuration and updating, so
that it is characterized by simple and convenient operation
Dynamic IP: support internet connection assigned with dynamic IP address
Video input: 4CH PAL/NTSC composite BNC (1.0VP- P, 75) 
Stream type: single video stream or composite stream
Audio input: BNC, 1/2/4CH line/MIC, input voltage<2.5Vpp, /input impedance >10KOhm.single
track plug
MIC available: Vbias=3.3v x 3/4, inside20dB amplifier, input impedance >3Kohm. single
track plug
Audio output: BNC, 1channel audio output output<4Vpp, power<1W, load>8Ohm single track plug
User management supports the three-level password

Alarm
Alarm detect and action: Alarm input and output can support mobile sensing, Video
Lost, date, time, and event trigger.
Action: Relay Output control the peripheral equipment
Interface: 2/4CH grounding alarm input, 1/4CH relay output
Alarm relay: 24V DC/1A, 120V/1.0A
WinDog: watch the voltage of system
Motion detection: Yes 

Hardware
CPU: DSP+MIPS
operate system: Embedded linux system
ROM: 4M Bytes Flash ROM
RAM: 64M Bytes SDRAM
PCB Size: 110 (w)mm x 70 (h)mm x 2 (d)mm (1/2 CH) 
157 (W) x 115 (H) x 2 (D) (4CH) mm
Size: 205 (W) X 122 (H) X 48 (D) mm
Power supply: outlay, input AC100-240V 50/60Hz, output DC12V/1000mA 
Power consumption: ≤5W
Temperate: 5-60
Humidity: 20-80% RH 
Barometric pressure: 86kpa-106kpa
Installation: Shelf installation; Flat installation; wall hanging installation

SDK
Provide system and play SDK, the user can do double empold according to demand
Supports transfer server and APS
Supports DDNS 
Supports RS232 and RS485 transfer
Supports remote-file server, can realize remote Playback and download. 
PTZ Protocol and control separate, can connects any pan-tilt and dome

Packing: Standard