DC internal resistance: 650 ohm + -15%
Color:Black/Blue
Calibration position: +5
Accuracy: Level 5
DC current; 500uA +-15%
Backlight: Tungsten bulb
Working temperature: -22%-55 degrees Celsius
Backlight voltage: AC/DC 6V-12V (9V is recommended)
Only can Working Amplifier 5-60W !