IP cameras Comparison: D-Link, Dahua Technology (4)

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	D-Link DCS-2230	Dahua Technology DH-IPC-HFW2431DG-4G-SP-EAU-B	Dahua Technology DH-IPC-HFW1220S	Dahua Technology DH-IPC-HFW2431TP-ZS-S2
Contact manufacturer	Contact	Contact	Contact	Contact
Chip Inch Size	1/3	1/3	--	1/3
Colour Type	Colour / Monochrome	Colour / Monochrome	--	Colour / Monochrome
Specialist Type	Network	--	--	--
Voltage	5 V DC	MicroUSB / 5 VDC	12 V DC, PoE	12 V DC, PoE
Motion Activated	✔	✔	--	✔
Picture Elements HxV	1920 x 1080	--	1920 x 1080	--
Image Frame Rate	15 fps	25/30 fps	30fps	25/30 fps
Resolution	--	4MP	2 MP	4MP
Sensitivity Lux	--	0.01 Lux@F1.6 (Colour,30IRE), 0.001 Lux@F1.6 (B/W,30IRE), 0 lux (Illuminator on)	--	0.008
Focal Length mm	--	2.8 mm; 3.6 mm; 6 mm	3.6	2.7 ~ 13.5
Mount Type	--	Wall, Pole	--	Pole
Wide Dynamic Range	--	✔	--	✔
Back Light Compensation	--	✔	✔	✔
Auto Gain Control	--	✔	✔	✔
White Balance	--	✔	✔	✔
Electronic Shutter Range	--	Auto/Manual 1/3 s–1/100,000 s	1 ~ 1/100,000s	Auto/Manual 1/3 s–1/100000 s
S/ N (Signal/ Noise) Ratio dB	--	>56	> 50	>56
Digital (DSP)	--	--	✔	--
Signal Mode	--	--	--	PAL

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