3
○
1 Signal receiving area: This is the front receiving area of the signal receiver, where
the signal is received by interactive writing pen or pointer
○
2 Laser: This is the laser which can be used to determine the scope of available
screen, it
’
s red when it works.
○
3 Signal indicator light
：
This is the signal indicator light, it
’
s green when
it works
○
4 Power indicator light
：
This is the power indicator light, it
’
s red
when it works.
○
5 USB interface: This is the USB interface, attention: This is
square-mouth.
○
6
Laser switch: This is touch switch
○
6
