SETTING
3 - VOLUME CONTROL
You can adjust the volume control level by using the “VOLUME” control slide switch located on the top. Volume can be adjusted from the standard level of your phone up to 30 dB or more.
4 - TONE CONTROL
You can adjust the tone by using the 5 position “TONE” switch located on the top.The tone can be adjusted in 5 dB step from the 0dB mid point to the Hi or LO positions shown according to your individual requirements
5 - BOOST SWITCH
If you wish you can increase the receiving up to 10 dB more by pressing and holding the Boost switch button. During this operation the microphone is muted to avoid feedback problems. To speak release the button so that other party can hear you.
6 - BATTERY INDICATOR
The battery LED indicator should illuminate every time you use your
IMPORTANT: Always disconnect
8