Twice in recent days we've had a mysterious box on the letter-box. The first one was red - the latest one is green - as seen below:
I'm curious as to what they are? It's been suggested something to do with orienteering. In London I think this would invite a controlled explosion....
I took the box apart - after all being on my letter box makes it mine, right?
The parts can be seen below:
It looks to me like it detects a flash or IR beam and starts the led flashing - no sounding device and no RF-like components, so it probably isn't a transmitter or receiver. I tried flashing a bright light at it, but nothing happened.
Anyone know? There was nothing marked on the PCB that I could find on Google.
I thought maybe ACT have some fiendish device to measure who reads their bogus election messages...