If an Arduino is connected, one can buy a very cheap sound module that works with the 5V of Arduino output. (I connected one to PIN 13 just in case). To support this, changes are required: - [ ] in the Sketch to also read from serial and, - [ ] send from the sensors module the Alarm signal
If an Arduino is connected, one can buy a very cheap sound module that works with the 5V of Arduino output. (I connected one to PIN 13 just in case).
To support this, changes are required: