IP Dome cameras Comparison: Bosch, Dahua Technology (4)

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	Bosch NII-51022-V3	Dahua Technology DH-IPC-HDBW2431EP-S-S2	Dahua Technology DH-IPC-HDBW2431RP-ZS-S2	Dahua Technology DH-IPC-HDBW2230EP-S-S2
Contact manufacturer	Contact	Contact	Contact	Contact
Chip Inch Size	1/2.7	1/3	1/3	1/2.7
Colour Type	True Day / Night	Colour / Monochrome	Colour / Monochrome	Colour / Monochrome
Resolution TVL	2 MP	4MP	4MP	2MP
Sensitivity lux	Colour: 0.24 lx; Mono: 0.05 lx; 0.0 lx with IR	0.008	0.008	0.005
Dome Type	Static	--	--	--
Digital (DSP)	✔	--	--	--
Indoor/Outdoor	Indoor	Outdoor	Outdoor	Outdoor
Mount Type	Surface, Wall	Wall, Ceiling, Pole	Wall, Pole, In-Ceiling, Ceiling	Wall, Pole, Ceiling
Voltage	12 V DC, PoE	12 V DC, PoE	12 V DC, PoE	12 V DC, PoE
Focal length	3 ~ 10 mm	2.8 mm / 3.6 mm	2.7 ~ 13.5 mm	2.8 mm / 3.6 mm
Compression	H.264 (MP); M-JPEG	H.265; H.264; H.264B; MJPEG (only supported by the sub stream)	H.265; H.264; H.264B; MJPEG (only supported by the sub stream)	H.265; H.264; H.264B; MJPEG (only supported by the sub stream)
Back Light Compensation	✔	✔	✔	✔
White Balance	✔	✔	✔	✔
Electronic Shutter range	1/12 ~ 1/15000	Auto/Manual 1/3 s–1/100000 s	Auto/Manual 1/3 s–1/100000 s	Auto/Manual 1/3 s–1/100000 s
S/ N (Signal/ Noise) Ratio dB	>50	>56	> 56	> 56
Auto Gain Control	--	✔	✔	✔
Signal Mode	--	PAL	PAL	PAL

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