Sper Scientific 800037 WBGT Heat Stress SD Card Logger - Manual (Page 24)

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TROUBLESHOOTING
System Reset
If the meter is not functioning properly (i.e.,
the system is frozen and the keypad is
non-operational), reset the meter:
1. Press POWER to turn the meter on.
2. Use a small tool (such as a
disassembled paperclip or a pin) to
press the RESET button (located on
the right side of the meter under the
protective black cover). Wait a few
seconds for the meter to restart.