... , the accuracy not lower than Class 2.5, with auto overcurrent protection, reset buttonc, AC low voltage output: 2V-24V, rated ... high voltage output, 240V-300V two grade, 100MA , with auto overcurrent protection.f, With safety general power on the teacher control board ... the accuracy not lower than Class 2.5, with auto overcurrent protection.b, DV steady voltage output, 1.5V-24V, adjustable ...