General Tools and Instruments WBGT8778 - Manual (Page 5)

3. ALARM SETTING
The meter features audible alarm
to give warning for possible heat
stress in the environment. When
WBGT value reaches the alarm
threshold, the value starts to blink
with continuous beep(about 70 dB).
The alarm stops when measured
value falls below the threshold or
the meter is turned off.
The alarm threshold is adjustable
for different applications. Hold
down for 2 seconds to turn on
the meter and enter alarm setting.
The current setting displays with a
blinking digit. Press to increment
the value and to select digit.
After new alarm threshold is set,
press for 2 seconds to return to
measuring mode.
The setting range is 20.0~37.2 C
(68.0~99.0 F). "OUT" will show if
setting is out of range. (Fig. B) o
o
MODE MODE
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Fig. B
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4. BATTERY REPLACEMENT
appears on the LCD when battery
voltage gets low. To replace battery
by opening the compartment on the
rear of the meter.