Does anyone know whether anyone makes an automatic window lock, so that I could have all my windows automatically lock when I lock the front door, and automatically unlock when I unlock the front door? I have just ordered new double glazing with Yale locks, and would really like to automate these if possible. There seem to be lots of sensors out there, which would tell me whether the widow was locked and whether it was open, but I haven't yet been able to find any locks (which seem to me a much better solution).

Thanks - Rowan