3 ms·
The back case is actually the piezo speaker, and it connects with springy contacts not a soldered or wired connection. I would imagine this opens up a variety
by djrogers 6y ago
The back case is actually the piezo speaker, and it connects with springy contacts not a soldered or wired connection. I would imagine this opens up a variety of easy ways to connect this to a relay for a "louder" alarm.