Sentry ST520 - General Descriptions; LCD and Control Panel

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4. General Descriptions
4-1 LCD and Control Panel
A. Data Hold Symbol
B. SET Function Symbol
C. Low Battery Symbol
D. Measuring Symbols of
Primary Reading
E. Measuring Symbols of
Secondary Reading
F. Measuring Symbols of
Tertiary Reading
G. Illuminance Unit (lx or fcd)
Symbol
H. Primary Reading
I. Color Temperature Unit (K)
Symbol
J. Secondary Reading
K. Light Source Symbol (FL,
INC or LED) (522)
L. Tertiary Reading
M. Unit / Down Button
N. Mode Button
O. ⊿（Color Difference）
/ Up Button
P. Power and Hold Button