Q-See QSD2216 - Manual (Page 44)

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8. Main standard & parameter chart
Item Specification
Compressed picture M-JPEG
Video signal NTSC/PAL
Video input Conposite:1.0Vp-p/75 Ω,BNC ×16
Video output Conposite:1.0Vp-p/75 Ω,BNC ×2 S-VIDEO
Audio input -8Db 22K Ω,RCA connector ×4
Audio output -8Db 3K Ω,RCA connector ×2
Alarm input 16
Alarm output 1
Record time 18-1680 hours/40G
Electron clock Year/Month/Day; Hour/Minute/Second
Secrete function Password protection
Update USB
Power source DC12V 5A
Environment temperature
Work temperature:+5
℃~+70℃;humidity:<90％
store temperature-20
℃~+70℃;humidity:<95％
weight 5.3kg(include power supply)
Exterior size 430mmX400mmX90mm