Model	CQ4	BQ4
Input	Video input:4 BNC, VCR input:1 BNC	Video input:4 BNC, VCR input:1 BNC
Output	Monitor output: BNC, VCR output:1 BNC	Monitor output: BNC, VCR output:1 BNC
Alarm	4 Ch. individual On/Off, OSD Display & Buzzer Time zone selectable, Alarm event record display till 30list, Alarm out	4 Ch. individual On/Off, OSD Display & Buzzer Time zone selectable, Alarm event record display till 30list, Alarm out
Video Loss	OSD Display & Buzzer, Video Loss out	OSD Display & Buzzer, Video Loss out
OSD Display	Camera ID, Time/Date Display	Camera ID, Time/Date Display
Zoom	2xZoom Mode VCR Play back	2xZoom Mode VCR Play back
Picture Capture	Upto 8 Pictures Record	Upto 8 Pictures Record
Power on Event	Power on Event Record Display	Power on Event Record Display
Remote Control	RS-232C Connection (Option)	RS-232C Connection (Option)
Power Supply	DC 5V, 2A	DC 5V, 2A
Dimension	200mm(W)x43mm(H)x155mm(D), 7.87"x1.69"x6.10"	200mm(W)x43mm(H)x155mm(D), 7.87"x1.69"x6.10"
Weight	800g, 1.78lbs	800g, 1.78lbs