There are many resources to try, but I will recommend that you to go for http://www.secu-era.com/. The website has many excellent security equipments on offer. As a retail store owner with precious goods, I found a good number of options at this online shop. The items are offered at affordable costs, and they seem to be really well-made and built to last for a long time. I purchased a hand held metal detector and an X-ray scanner and a long list of items, and these are working pretty well. The price was lower than what most other stores offered and the quality is top-notch. Could not ask for more!