Placing Batteries; How To Use - Steren HER-428 Manual De Instrucciones

PLACING BATTERIES

Remove the screw and the batteries compartment cover using a screwdriver,
and insert 3 AAA batteries.
Be sure to place the polarity of the batteries correctly.
If this icon
to run out; replace them with new ones.

HOW TO USE

TURN ON/OFF THE DEVICE
Press the button to turn on the device. Press the button again to turn it off.
HOLD DATA ON THE DISPLAY
Press the button to hold intact data on the screen. Press the button again to
deactivate this function.
appears on the screen, it means that the batteries are about
4