
a. Short press to call Master Station;
(Backlight of Answer/Hang up will flash. Ringback tone can be heard.)
b. Long press 2s to send SOS;
(Backlight will keep on for 2s. SOS can be initiated anytime.)
6. Answer/Hang up
a. Short press to answer when ringing;
(Backlight will stop flashing and keep on.)
b. Short press to hang up when talking;
(Backlight will turn from on to off.)
c. Short press to cancel when calling;
(Backlight will stop flashing and turn off.)
d. Short press to call target number when in standby mode (Target number
should be added beforehand);
(Backlight will flash. Ringback tone can be heard.)
7. Unlock
a. Short press once within 2s to unlock relay 1 when talking;
b. Short press twice within 2s to unlock relay 2 when talking;
c. Short press three times within 2s to unlock relay 3 when talking;
(Backlight will flash one time after 2s and lock will start to unlock.)
d. Long press 2s to clear the alarm;
(Security alarm will be turn off while confirming alarm)
8. Volume Increase ( ) + Volume Decrease ( )
Long press and hold “+” and “–” simultaneously to switch ringtones. Press
“+” or “-” to choose; 4 kinds of ringtones available.
(Both backlights will keep on until you long press and hold them again.)