Battery motion sensors
Batteries
— powered by replaceable standard size batteries.Such batteries can be both disposable and rechargeable, however, the first option is most often used in sensors (and the term “battery” in this case is used to refer to a slightly different type of power source — see below). This type of power supply is found mainly in wireless models, but it can also be provided in wired sensors to ensure the operation of some functions — for example, an alarm signal when communication with the control panel is lost.
Formally, the use of batteries requires additional costs — batteries are not always included in the kit, unlike batteries. However, in fact, these costs are quite insignificant — especially since the power consumption of most sensors is so low that the operating time on one set of batteries is often calculated for years. And you can change such a power source in a matter of seconds (whereas the battery needs time to charge). Thus, it is batteries that are most popular in modern self-powered sensors.
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