How do the intrusion detectors works?
Everyone knows that these devices react to the entry into the premises outsiders, but few know of their operating principle. It's pretty simple. They are equipped with movement sensors and temperature, respectively, determine a threat from these two figures having the same significance. If they focused only on one thing, it would fire alarm due to the inclusion of the fan or a warm battery. When embedded processor captures the danger, he shall so inform the building safety, the landlord or the law enforcement services (or all at once, depending on your settings). The equipment for the utility and effectiveness fully justifies its price.
After reading the reviews, you'll notice how often confusing system of detection and prevention of penetration. First only passively watching the scene of the incident and notifies the people, while the second is interconnected with other protective structures and the violation of the order they answer the door lock, fog emission of security, turning off lights, etc. Before you buy such a device, you need to clearly understand what the consequences might be. In offices and factories often refuse to use the concept of an active response to the intervention, because when triggered it seriously violates the manufacturing process and results in a loss, sometimes disparate risks.
When properly configured, the probability of activation in non-hazardous time is minimized. In addition, artificial intelligence allows these devices to analyze the external environment and previous experience to improve their performance. For example, the temperature changes due to the change of seasons will not lead to more frequent alarms due to changes in compensation.
Sensors invasion vs pets
They are inveterate enemies, since more than half the cases of erroneous alarm happens because of pets. These are then accused of excessive activity, provoking the wrong response security system. In fact, this problem is easily avoided. Before purchasing such a detector pay attention to its ability to distinguish between living objects. Generally considered the weight values in the designated permissible lb (100 lb equals 45 kg 85 - 39 kg 60 - 27 kg).