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justin

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About justin

  • Birthday 17/03/1973

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  1. Hope someone can clear this up for me. I have recenctly been told that duct grade cable (cat5 in my case) can not be run inside a building for more than 3 metres. As it enters a building it must be joined onto normal cable. This I am told is due to the toxic fumes the cable gives off in the event of it burning. I find the cable is so much better to use for CCTV in factories and other commercial building types. With this new info though I won't use it inside for anything. Has anyone ever been pulled up on this?
  2. I would opt for a good automatic external lighting setup. Ptz's only with door contacts and external beams or statics with analytics for detection.
  3. I detest wireless intruder alarms. It's a shame many new engineers are not having the opportunity to learn how to wire systems in all the different building types and environments many of us have been used to over the years. I came across a scantronic radio system last month. A rear fire door was being taken out and replaced by builders. I was to disconnect the contact and fit on new door. I was late onsite and the builders had already finished and taken the door away. The panel showed no response to it disappearing!
  4. Must be 20 years since I was last latching PIR's. Good days though.
  5. I agree Texecom may be best for you as won't need to change any network cabling. I am a big Galaxy fan but think Texecom (premier) is always a preferred option for domestic installs. Excellent choice of keypads as well. If you stick with a Galaxy the Dimension series will support cat5 for the network if that helps.
  6. Had good results from some 50w models made by diamond lighting.
  7. Has anyone else had any problems sending multiple signals with active baluns down the same CAT5 cable. I have used passive ones before and not had a problem. I have a site where I need to get 2 cameras on each of the 4 corners of a large building. I was looking at running one external grade CAT5 cable to each corner, installing two baluns in a 4x4 external box for the video connections. I would also like to trust my RS485 data to go down the 3rd pair of the same cable for telemetry. For the 4th and final pair I would like to send a normally closed alarm input back from a redwall or door contact etc to the DVR. One cable would make life so much easier for this one. If the distances turn out to be too far for the passive baluns and I need to fit an active one is this best at the camera or DVR end? I can mix these can't I? As I am led to believe, if the distance is not far enough two active baluns could cause a too strong signal. Thanks in advance.
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