Posted inAmplifiers
9 Burglar alarm circuits ideas
Here is five burglar alarm circuits for you can look as idea To protect their property from thieves. simple switching, vibration systems, touch-sensitive.
Posted inMeters & Detectors
Motion detector alarm circuit with PIR sensor
You have a private area, right? If you have this motion detector alarm circuit. It will reduce your worries. Imagine a big bear is coming to the behind of your house. Then, the siren alert. The big bear is shocked and runs away. You and your family are safe. Is it great?