• Please only use regulated powersupplies.  When measured with multi-meter make sure it is withing 5% of rated camera voltage
  • Do not use a 1 amp powersupply to power a infrared dome/pipe.  Rather use a 2 amp.  This is to leave spare amperage of at least 40% to not overheat the powersupply.  We had it where powersupplies melted due to too much load.
  • Use decent power cable, must not be to thin.
  • Test polarity before installing, also the voltage.  Remember to not have more than 5% voltage than rated on camera.
  • Ensure proper cooling for powersupplies.
  • Make sure you are not using the same power circuit as elevators, large machinery, ovens, generators, compressors


  • Avoid sharp bends or excessively pulling on cable.  This may cause cable damage.
  • Avoid running cable parallel to AC power sources or cables. 
  • Do not join cable in any way, even with barrel connectors.  If you do it may disrupt the image.  Explain to customer the problem should you have no choice.
  • Use the correct tools to strip your cable and crimp the connectors
  • Please remember to label your cables to make problem solving afterwards easier
  • Do not run cable outside without conduit.
  • Use lightning protection


  • Test all your cable, equipment and cameras before going to site (this includes your powersupplies and dvr)
  • Always take a spare camera or two, as well as additional tools and connectors.  Anything can happen.
  • DO NOT trust the company you are installing by concerning their electrical wiring.  Test everything or get a electrician to test should you notice problems. 
  • Try to avoid direct sunlight on the equipment.  This can raise the temperature in summer time especially which will cause the cameras to overheat.
  • Make sure no one can easily reach the cameras to ensure security from criminals.
  • Lastly remember to test the polarities and voltage before installation. 


  • Always ask for your deposit before going to site or when you arrive on site.  Too many installers end up doing the work and never get paid.
  • In your invoice always make a note that the products belongs to you until such a time the invoice is paid in full.
  • Advise the customer to sign a maintenance aggreement.  If he does not want you to maintain the site at a fee, let there be a note that you do not take any responsibility for any failures or malfunctions, lost footage etc.  In any case, I would always propose you have this in your aggreement.  A lot of times the company where you installed only views their footage a year later and realise there is recordings missing due to either someone playing on the system and changing settings, or because the harddrive failed, or the footage is overwritten.  Or they realise only when the incident happens one of the cameras is not working and they never cared to contact you.
  • Lastly, mention on your invoice that your customer has a warranty, but all driving to the site and support carries a fee.  The product will be exhanged, but labour is still chargable.  Remember to make a note the warranty only covers manufacturer failures and not lightning, powersurge damage, user damage or incorrect handling of the products.