title: Turn on or off Android remotely
body: <p>I have plenty of android tablets placing in different locations inside a large room. I have a self-develop app running on all the tablets. </p>
  
  <p>I would like to turn on or off them remotely from PC. There are already TCP connections between tablets and PC. Or even just turn off the screen and turn it on again? (like pressing the power button once)
  Thanks</p>