I have a sliding window in my bedroom that I would like to leave open at night and then have automatically close at around 5:00 or 6:00 when the morning traffic arrives.

I was thinking I would get some sort of timer mechanism connected to a relay or electromagnet with enough push power to close the window when the timer is set.

Any idea how I might do this? Or is there someone who possibly makes this?

Greg s

I'm not afraid of heights. I'm afraid of widths.