Meter Panels are provided to measure the DC voltage and current of the system. Panels are 5-¼ inches high (3 rack units). Standard meter accuracy is 2%. Optional 1% meters area available at an additional cost. Shunts are supplied for ratings 75 amps and above. 24 VDC panels have 35 VDC scales. 48 VDC panels have 75 VDC scales.