Dome cameras Comparison: Bosch, Dahua Technology (4)

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	Bosch VG4-514-ECE	Dahua Technology DH-HAC-HDW1000MP	Dahua Technology A42AL23	Dahua Technology HAC-T1A51
Contact manufacturer	Contact	Contact	Contact	Contact
Chip Inch Size	1/4	--	1/3	1/3
Colour Type	Colour / Monochrome	--	Colour / Monochrome	Colour / Monochrome
Resolution TVL	540	720p	4MP	5MP
Dome Type	Continuous Rotation	Static	--	--
Sensitivity lux	0.0065	0.05	0.01	0 ~ 0.04
Indoor/Outdoor	Outdoor	--	Indoor/Outdoor	Indoor/Outdoor
Voltage	21 -	12 V DC	12 V DC	12 V DC
Focal length	3.4 ~ 122.4	3.6 mm	3.6mm	3.6 mm
Auto Gain Control	✔	--	✔	✔
White Balance	✔	--	✔	✔
S/ N (Signal/ Noise) Ratio dB	50	--	>65	65
Synchronisation	Internal, Line-lock	Internal	--	--
Signal Mode	PAL	--	--	PAL, NTSC
Digital (DSP)	--	✔	✔	✔
Electronic Shutter range	--	1/50s ~ 1/100,000s	1/3 - 1/100,000s	1/25(30) ~ 1/50,000s
Built-in IR LED	--	✔	✔	--
Mount Type	--	--	Wall, Pole	--
Back Light Compensation	--	--	✔	✔

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