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It seems to work all the time. I use Surveillance Station so I have it configured to the IP of the NAS and 10 minutes and the camera keeps the time. Without the NTP setting it would drift too much.

bp2008 is absolutely right, the camera seemed to have a red light that could be seen in the dark but close inspection revealed that it's the IR itself.

The NTP setting is in the web UI, in System, General, Date.

IPC-HDBW4421R-AS (SD, audio). The type with no transparent dome like the IPC-HDBW4421C is a turret. The Playback tab on the 4421R-AS only seems to be able to play from the SD card so it may not have worked for you.

I'm testing it now on my IPC-HDW4421C Chinese turret and it doesn't have the playback tab. I also have the dome version and it has the playback tab.

It's too bad you couldn't try the Dahua playback interface, the dome version of the Dahua 4MP you were looking at initially has the playback tab. I can't compare with the Hikvision playback because the Hik died after only a couple of months. I use a NAS with Surveillance Station 7, it's free...

If you don't want to use the IR it's possible. It's not possible to turn off the red light separately from the IR though. To disable the IR go to the Night profile and set Day & Night to "Color" instead of "Auto". Day & Night : "Black & White" = IR and red light On Day & night: "Color" = IR and...

Thanks, it's good to know that it works on the latest firmware!

Nice, it's more like it! The second pic looks similar to the results I get with the first setting that's meant for low noise, there's good detail and a lot of what can be seen during the day. I would fine tune from there. The drawback is that it won't be too good for motion (good for still...

It didn't seem to work, it depends too much on available light. The bright side is that you can definitely get a better picture, it's only a matter of finding the sweet spot. After hours of tweaking last night it appeared that Defog set to the minimum can help reduce noise. The last profile I...

I hope it will be useful, the night settings are tricky... I plan to add a camera in the opposite corner, this way both cameras will benefit from the IR. Bugs and spiders really mess up the motion detection, it also tends to record for hours during the night when that happens... That's why I...

The store seems to be unavailable at the moment: http://aliexpress.com/store/638300 but there are other sellers http://www.aliexpress.com/wholesale?&SearchText=Dahua+IPC-HDW4421C

Here's another Night profile. "Low Noise" reduced the noise but also reduced detail so I tried the manual exposure this time. I tried to get as much light as possible while keeping noise to a minimum. Brightness 50 Contrast 65 Saturation 0 Sharpness 55 Gamma 70 Exposure...

@wxman: The first WDR Off picture was from a different day, it's hard to compare. I'm also not convinced that the WDR in those 4MP Dahua and Hikvision is the same as expensive cameras but it seems to work and make a nice difference in my case. I adjusted the settings with and without and the...

Great, I'm glad that it was helpful! The second picture looks nice. WDR changes the picture too much to use the same settings for comparison. That's why it doesn't look right at first when trying WDR with normal settings. The WDR does seem to work, it does the same here as on your second...

Did anyone try the IVS detection with the 4MP Dahua cameras? It doesn't seem to work here with the turret. Video Detect works fine but the IVS Tripwire and Intrusion don't produce any Event in Information/Log. Moving objects are detected (green rectangle) and the lines flash in red but it...

It does the same here with the 4MP turret and dome. We may need to find the Chinese firmware.

WDR seems to work here with the same camera from Ali, 3.6mm lens. Without it there are more shadows and no detail in bright areas, the sky is white. No amount of tweaking the settings could improve the bright areas with WDR Off. With WDR the picture is washed out with default settings but it can...

Hopefully the 4MP have a different sensor, the 4300 is a bit older and didn't have the 120db WDR, I hope the 0.01 is real this time, or at least in the same league as the new 4MP Hiks. hwj77: There's a version of the Dahua 4MP you were looking at with a SD card slot: 4Mp IPC-HDBW4421R-AS, but...

Thanks for the details! The Dahua 4MP also have 0.01Lux and 120db WDR like the new US version of the 4MP Hikvision. It will be interesting to see how they compare to the Hikvision. About the DS215J, it depends on the requirements and if the other features of a NAS like backup would be...

The Hikvision 2032 I had only lasted a few months, it died during winter. The Chinese Hikvision have H265 but don't seem to have the 0.01Lux and 120db WDR. I went with the Dahua 4421 this time. The E may be for "Eco Savvy". The Chinese page has the 4421R...

There's no trace of 0.01Lux or 120db WDR on the Chinese Hikvision site. It looks like they separated the markets by more than model numbers this time and have different versions. Maybe some studies found that US buyers are more interested in WDR and H265 sells more in Asia? To me it looks like...

Hello, I found those pages a couple days ago: DS-2CD3345(D)-I Turret: http://www1.hikvision.com/cn/prgs_1019_i8915.html = DS-2CD2345(D)-I http://www1.hikvision.com/cn/prgs_964_i8168.html DS-2CD3145F(D)-I(S) Dome: http://www1.hikvision.com/cn/prgs_1019_i8916.html Differences: DS-2CD2342WD-I...