I had a similar experience with a wireless boiler thermostat in our rented terraced house in London. It was one of the more common modules; a cheap one from Wic

I had a similar experience with a wireless boiler thermostat in our rented terraced house in London. It was one of the more common modules; a cheap one from Wickes or a similar DIY store, so every other house on the street had the same unit. The problem was, they had 3 channels, and (at least) one of our neighbours was using the same, default channel. So his unit would send bogus on/off signals to our boiler, and our boiler unit would turn on and off totally out of sync with what the thermometer reading was. It took me a few weeks to work out this theory (mainly due to the fact that the wires from the old unit were still there, and after giving up on waiting for the landlord to fix it, I tore the unit off the wall only to find that the wires were not connected, only then did I realize it was wireless). I tried changing to a different channel and it all started behaving normally after that. Edit: did I mention that this was costing me well over a hundred pounds a month in excess gas bills? I'm sure someone could come up with a real-world DOS attack with this sort of shit...