My Logitech Bluetooth mouse goes to sleep after several tens of=20 seconds. However, it seems to wake up as soon as it is=20 moved. Although I haven't taken it apart to look inside, my best=20 guess is that there is some sort of inertial sensor that wakes the mouse up= .. I've taken to shaking it slightly from side to side when I go to use=20 it but it does sit idle for significant periods of time. dwayne At 09:31 AM 6/29/2015, Bob Ammerman wrote: >Mice eat batteries because they have to stay awake longer. A KB only wakes >up when you press a key. The mouse has to watch for motion at all times, s= o >it needs to have its LED on. Most mice time out after a bit (a few minutes= ?) >and turn off the LED. At that point you have to click a button to wake the >mouse up again. Most mice do *not* pass that wake-me-up button click to th= e >host. --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .