Plantronics Explorer 240 User Guide - Page 11

Headset Controls and Indicators Make a call Action Indicator Light Enter the number on your Blue flash every 2 seconds until phone and press send. the call is ended. Tone Ringing Battery level To check, simultaneously press and hold both the Call Control and Volume buttons for about 2 seconds. The indicator light flashes to show the charge level. Red flashes Battery level 1 More than 2/3 full 2 1/3 - 2/3 full 3 Less than 1/3 full None when checking level. Low battery tone indication: 3 tones when under 5 minutes talk time is remaining. Adjust the volume (during call) Tap the Volume button to increase through 4 levels; tap at top level to return to lowest volume setting. Single blue flash for every volume level change. Low tone at every volume level change. (Two tones at maximum volume level.) WARNING Do not use headphones/headsets at high volumes for an extended period of time. Doing so can cause hearing loss. Always listen at moderate levels. See www.plantronics.com/healthandsafety for more information on headsets and hearing. 7