One of the best tools we have against these sort of anti-consumer practices is the development of open source firmware ... for the 433 MHz magnetic door and window sensors that you can pick ...

So, where do the three sensors come in? A magnetic reed switch on the wall of the real mailbox pairs with a magnet in the flag. To determine whether the door is open, [Bob] initially used ...

To prevent interference from magnetic accessories, the Pixel Fold might add “robust open/close detection” with Android ...