Bargain of this week’s car boot, a 12v siren horn, for free.
Sometimes people just want rid of stuff and would rather give it away than take it back home, especially near the end of the sale or if it starts raining.
It’s a cool thing! Plastic, 1980s I imagine, the kind of thing you’d see in Tandy back in the day.
The best thing is that even running from a 9v PP3 it’s loud AF. Really startled the kids when I tested it.
With a Pi, relay and PIR sensor added to the mix it may yet become the ultimate in fridge security.