Heath Consultants Personal Surveyor (PS200 Series) - Manual (Page 43)

2-19
OPERATION
2.9 SWITCH THE INSTRUMENT OFF
Press and hold both the Left Hand (LH) button and the
Right Hand (RH) button to switch the instrument OFF.
The instrument display starts a countdown from three (3) to
OFF. Both buttons must be pressed together until the display
goes blank.
Fig. 2-23 Switch OFF
While both buttons are pressed, the audible alarm sounds
every second to alert user that the instrument is switching
OFF.