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

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	D-Link DCS-3415	Dahua Technology DH-PSD81602-A360	Dahua Technology DH-IPC-HFW2431DG-4G-SP-EAU-B	Dahua Technology DH-IPC-HFW2431TP-ZS-S2
Contact manufacturer	Contact	Contact	Contact	Contact
Colour Type	Colour / Monochrome	True Day / Night	Colour / Monochrome	Colour / Monochrome
Resolution	640 x 480	1080P	4MP	4MP
Sensitivity Lux	1.61	0.005 ~ 0.02	0.01 Lux@F1.6 (Colour,30IRE), 0.001 Lux@F1.6 (B/W,30IRE), 0 lux (Illuminator on)	0.008
Auto Iris	✔	✔	--	--
Voltage	100 ~ 240 V AC	36 V DC	MicroUSB / 5 VDC	12 V DC, PoE
Motion Activated	✔	✔	✔	✔
Focal Length mm	4.1 ~ 73.8	5	2.8 mm; 3.6 mm; 6 mm	2.7 ~ 13.5
Image Frame Rate	30 fps	25 ~ 30 fps	25/30 fps	25/30 fps
Auto Gain Control	✔	✔	✔	✔
White Balance	✔	✔	✔	✔
Chip Inch Size	--	1/2	1/3	1/3
Digital (DSP)	--	✔	--	--
Specialist Type	--	PTZ	--	--
Direct Drive	--	✔	--	--
High Speed	--	✔	--	--
Mount Type	--	Wall	Wall, Pole	Pole
Wide Dynamic Range	--	✔	✔	✔
Picture Elements HxV	--	2 x 4096 x 1800	--	--
Back Light Compensation	--	✔	✔	✔
Electronic Shutter Range	--	1/3 ~ 1/100000s	Auto/Manual 1/3 s–1/100,000 s	Auto/Manual 1/3 s–1/100000 s
S/ N (Signal/ Noise) Ratio dB	--	> 50	>56	>56
Signal Mode	--	PAL, NTSC	--	PAL

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