User's Manual

Page 6
Self-test
On successful completion of the self-test sequence, the green light on the
left will flash 3 times and the buzzer will sound 3 times. The PLB will
switch itself off after completing a self-test, even if the OFF button is still
held down. Release the button and close the flip-top lid.
If the self-test fails, repeat it. If the problem persists, check the battery
expiry date. Do not use the PLB; return it to a dealer.