Changing the Batteries

When the battery voltage is low, the instrument’s display on the display of the battery symbol blank space, prompted to change the battery. To change the battery, simply insert the supplied Phillips screwdriver into the battery door, rotate a few turncounter clockwise, and remove battery. Install new battery, being sure to observe proper polarity. Replace the battery door and turn clockwise with Phillips screwdriver. Warning: Replace battery only in non-hazaidous locaion. Substitution of components may impair intrinsic safety.