This device is simplicity itself to use:
When each button is pressed on the transmitter unit the corresponding
coloured LED lights up on the receiver unit, which is placed in view of your speaker.
The LED on the receiver unit remains on until another signal is
sent for a different coloured LED.
And for those speakers who need some help with their vision, press
the black button, and the audible sounder goes off!
This discreet and totally portable piece of equipment is a must
for all conference organisers.
