One Drop Owner's Manual page 47

[2] If this error code persists on retesting, call Customer Service.
The phone number is printed on the back of your One Drop
Meter.
Error 7
One Drop Meter problems have occurred that are beyond
your control.
Contact Customer Service for assistance. The phone number
is printed on the back of your One Drop Meter.
Error 8
A problem has occurred related to the One Drop Meter
hardware.
Contact Customer Service for assistance. The phone number
is printed on the back of your One Drop Meter.
If there is a temperature warning or error, the thermometer
symbol is displayed for 5 seconds and then the One Drop Meter
turns off.
LOW TEMPERATURE MESSAGE
The One Drop Meter is below its system operating
temperature range of 50°F to 104°F (10°C to 40°C).
ACTIONS: Move to an area with an ambient temperature range
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