Introduction - If you have any usage issues, please Google them yourself
My unit is an unattended computer room is located in a mountain top of the hill, the road up the mountain is more than 600 steps. Due to their communication needs, sometimes you want to switch certain machinery and equipment operation, although simple, but the staff spent more than 10 minutes to climb a trip to Mountain not only difficult, but also delay the time. To solve this problem, I use 89C2051 microcontroller design of a remote control switch, can switch on the top of the hill on the equipment room at the foot of the mountain