... key Disk key report data to the RF module,2.4G wireless communication to transmit data to OS End, ... , minimum power consumption is less than 40us, low voltage indicationMouse function:1, angular velocity sensor using ... sent to usb to receivelow-power battery prompt1, low voltage testing function: voltage is lower than ... 3.3 v will enter into low voltage state, every 30 seconds red power will ...