I believe that we often encounter the false alarm of the anti-theft device of the clothing security door when we go to the supermarket. Such a phenomenon will cause a lot of embarrassment and misunderstanding. So how does this phenomenon occur? How can the sensitivity of the supermarket EAS alarm door be improved? Today, I will simply take the common 3000+ series of radio frequency anti-theft system motherboards in the market as an example to give us a brief introduction on how to adjust the sensitivity of supermarket anti-theft devices.
If there is a false alarm or non-report for supermarket anti-theft devices, a very common adjustment method is a potentiometer knob. If the sensitivity adjustment does not have any response, you can refer to this article to eliminate interference. First of all, we need to use the following things: a flat-blade screwdriver, a small bit, perhaps an iron piece, nails, and the key to the immobilizer motherboard.