QOMO QRF300 User Manual - Manual (Page 7)

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Operating Relative Humidity: 0-90%
Receiving distance: ~200 feet radial
Function: Used to receive signals from the remotes, and send information to the computer.
Illustration
1. Antenna Terminal.
2. Power light (Signal light): when the main receiver is
plugged into the USB port of a computer, the power
light will light up red. The flashing red light indicates
the main receiver is receiving and processing the
data.
3. Antenna: helps pick up weak signal to extend the working distance.
4. Extension USB: extends the connection between the
main receiver and the computer.
2.4 Keypad pack
Convenient carrying case that holds student keypad, instructor keypad, receiver, software disk, and
cables