IP cameras Comparison: Bosch, Dahua Technology (4)

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	Bosch NEC-070V04-21W	Dahua Technology DH-PSD81602-A360	Dahua Technology DH-IPC-HFW2449TL-S-PRO	Dahua Technology DH-IPC-HDW3849H-AS-PV-PRO
Contact manufacturer	Contact	Contact	Contact	Contact
Chip Inch Size	1/3	1/2	1/1.8	1/1.8
Colour Type	Colour / Monochrome	True Day / Night	Colour / Monochrome	Colour / Monochrome
Resolution	540	1080P	4MP	8 MP
Digital (DSP)	✔	✔	--	--
Specialist Type	Infrared	PTZ	--	--
Sensitivity Lux	0.06 @ F1.4	0.005 ~ 0.02	0.0005 [email protected]	0.0008 [email protected] (Color, 30IRE) ; 0.0004 [email protected] (B/W, 30IRE) ; 0 lux (Illuminator on)
Auto Iris	✔	✔	--	--
Voltage	12 VDC, 24 VAC	36 V DC	12 V DC	12 V DC, PoE
Focal Length mm	4 ~ 9	5	2.8 mm; 3.6 mm; 6 mm	2.8 mm; 3.6 mm
Picture Elements HxV	768 x 494	2 x 4096 x 1800	--	--
Image Frame Rate	30 fps	25 ~ 30 fps	--	25/30 fps
Auto Gain Control	✔	✔	✔	✔
Gamma Correction	0.45	--	--	--
Electronic Shutter Range	1/60 ~ 1/100,000	1/3 ~ 1/100000s	Auto/Manual 1/3 s–1/100,000 s	Auto/Manual 1/3 s–1/100,000 s
S/ N (Signal/ Noise) Ratio dB	48	> 50	>56 dB	>56 dB
Signal Mode	NTSC	PAL, NTSC	--	--
Direct Drive	--	✔	--	--
Motion Activated	--	✔	✔	--
High Speed	--	✔	--	--
Mount Type	--	Wall	Pole, Corner	--
Wide Dynamic Range	--	✔	✔	✔
Back Light Compensation	--	✔	✔	✔
White Balance	--	✔	✔	✔

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