... 212mmx105mm)3.Auto linkage, one button turn on/off,“system start”and“system end”could link to ... more convenient.4.Build-in time delay turn off electric circuit for projector,let projector fully abstraction ... will alarm.10.Funtion of control computer turn on/off, and could set to be “system start” and ... VGA,220v output plug, The electricity will be cut off when System end, safe and convenient.14.Two ...