These buttons are used to set alarm threshold voltages, alarm conditions, and alarm reset type. ZERO Control Control to produce zero volts when probe is coupled to a known zero source. Ground Receptacle Banana jack. A Certificate of Calibration accompanies each instrument when it is shipped from the factory. Do not use these instruments to make measurements of hard voltage sources or voltage sources which can deliver currents high enough to cause harmful shocks or personal injury.
All specifications are subject to change.