User Manual

User Manual DPM-816 PRO Page 10
Before first use, or in case the device has not been used for an
extended period, as well as to increase the measurement
accuracy, you need to calibrate the device using one or two points
of reference.
Installing the battery
Open the battery cover, shifting the cover with your thumb in the
direction of the arrow. Insert the battery, taking note of the
polarity. Close the battery cover until it clicks.
Low battery indicator
The device consumes very low power, and can last an extremely
long time from a single battery without a backlight.
When the battery eventually loses its capacity and does not
supply enough power, the top right corner of the display will show
a low battery indicator.
- Do not use the device with a low battery!
Turning on the device
To turn on the device, press and hold the button for 2
seconds until the device emits a sound signal.
After turning it on, the display will show "8888".