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Benson Chiang

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About Benson Chiang

  • Birthday 02/13/1991


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  1. Benson Chiang

    Mp or starlight

    Starlight cameras will give you images at night time in colour providing you have enough ambient lighting. In terms of how good an image the non starlight camera will give you is dependent on what the infrared from the camera can bounce off of and how long the IR on the camera is rated for. To be honest 30-40 meters is far too far for a 3.6mm lens. You will need a varifocal and to zoom it in.
  2. Benson Chiang

    Help with video power balun

    The way it would seem that second balun works is that you provide the balun at the camera end with 24-36V DC and it will convert it to 12v DC which will then fine for the camera. I have not used these like that myself but have used convertors in the past to convert 24v to 12v and it looks like this would work in a similar fashion. With that in mind a 12v psu would not do the job and it would need to be receiving 24-36v at the end of the run. In terms of burning a camera out by using 15.5v then yes for example if put that much power on a 1m run for a camera then there would be minimal power drop and the camera would receive most of that power. This is obviously higher than the 12v it needs and you could well burn it out.
  3. Benson Chiang

    Resolution problems

    The recorder will support 4mp cameras. The resolutions the cameras can be and the monitor can be set to are completely separate. E.g. you could have 4mp cameras on a 1080p screen. In this case you would not get the full benefit of the 4mp cameras as the screen cannot display at 4mp but if you were to digitally zoom in on the image you would be able to go further than if the camera was at 1080p before getting pixilation.
  4. Benson Chiang

    Help Power Supply issue

    If all of your cameras have dropped off do not look like they’re getting power I would indeed look at the power supply being the cause. It may be worth testing one of the cameras with a different psu. If it works you’ll have your answer.
  5. Benson Chiang

    what analog camera will work

    As has been said above you will need to focus on the lens size as this is what will dictate your field of view. The smaller the lens size the wider the view you will get.
  6. Whether you see a big difference will depend on the size and resolution of the screen. If the monitor is only 1080p then you will not get much of a benefit unless you use digital zoom in which case the 4k camera will allow you to zoom in further before you get pixilation.
  7. Benson Chiang

    cctv with colour night vision

    The advanced technology call 'starlight', it's basically like a low Lux camera. it only needs a little light and you can have colourful image. Furthermore, it comes the 'colour night' technology now. it's even stronger than the starlight camera. The outcome is quite impressive. Maybe you can google or YouTube it to have a look.
  8. Benson Chiang

    Dahua ntp servers

    It seems a silly thing to check but have you checked the time zone is correct
  9. My understanding with the FTP is that it will only upload snapshots so these will to be enabled as they are disabled by default.
  10. There is no way to do this. The only thing I can suggest is creating a rule to automatically delete the start and end notification emails within the email account itself.
  11. Benson Chiang

    Help with video power balun

    The distance the power travels through your baluns will depend on a few things. One is the power requirements of the cameras which will be 12v and 0.55amp based on the information you have provided. The other is the thickness of the cable you will be using to transmit the power as a thinner cable will lead to more volt drop over the run of the cable. The packaging on the baluns provides some information on this for you. E.g if you want to run a 12v, 0.5amp camera (yours have a slightly higher amp requirement) over 24 AWG cable for 100m your power supply will need to be outputting 15.5 volts as over the length of the run it will drop to the 12 volts your camera requires. The general rule is the longer the run the less voltage you get at the camera end and you have to compensate for this by providing more volts at the power supply end.
  12. I think this will be because the NVR is trying to access the sub stream of the cameras when in the grid view. It will be using the main stream when the camera is full screened. I would log onto the camera using a web browser and see if you can turn on the sub stream as it sounds like it may be off at the moment.
  13. Benson Chiang

    Help with new cameras

    Always check are the cameras ONVIF, which means it can talk to each other. However, it can only guarantee to have an image, not any other function. Don't really recommend people to mix recorder and camera with different brands, it usually causes issues. Only if you've spoken to the supplier first and make sure it all works. I would say, speak to the shop where you bought the cameras, see what they can do. God bless, man
  14. Benson Chiang


    Maybe you can have a look at some standalone cameras. Check this battery camera first. I think it would meet your requirement.
  15. Benson Chiang


    Hi. If you are looking for the camera specifically for car number plate, maybe the NPR camera is the one for you. But I don't think you would like to go there. The price is a little bit too high. I would suggest the 4K SPRO camera with Starlight tech. In this case, the face can be identified clearly even in the night. And it also gives you high resolution to room in for the number plate & any detail you would like to see. Furthermore, the DVR also has face detection/motion detection to push notification to your device. It should help you stop the crime. Hope this is helpful : )