Here's how to magnetic door sensor works:
1. The sensor has two separate parts, the first part is a powerful magnetic flux and the second part a switch that can be affected by magnets.
2. If the second part is mounted very close to one another, then the switch is set in open condition so that the voltage sensor can not flow. In this position, the door or window in the closed condition.
3. If the door or windows mounted magnetic door open sensor, the magnetic force to hold the spring switch is reduced, so that the switch becomes tetutup. This condition causes the signal sensor will detect that your house has an open window and trigger the alarm circuit to inform that there has been an intrusion.
Although using the working principle of a very simpler, yet effective enough sensors to detect if your home by a burglar entered through a door or window.
This indicates a low cost, you can create a security alarm system and make residents more safe.
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