Combine with human sensor light to create security alarm device
On 2016-02-13 23:18:04
It is better to be able to choose the sound. You can recognize the distinction between the two parts by sound. Both sound quality and sound quality are good. Just by connecting to the human sensor light and putting it in the necessary place, when it got dark it created an excellent one with a crime prevention effect alarm sound. I also attached a switch to make it easy to use.
Combined with a human sensor, it senses intrusion into the corridor on the first floor, and the buzzer informs the room on the second floor with a good sound quality, and is using it comfortably at a suitable volume. I like being able to select two sounds, and I can also change the sound with two sets, so I like it because it can be used for development.