The biggest new feature on the EZ Power Supply Tester III is the LCD screen seen on the front. This reports the +5V, +12V1, +3.3V, -12V, +12V2, 5VSB and PG. If the voltage is within a safe range, then it will be displayed. However, if the voltage on a certain line exceeds the maximum value, HH will be shown to indicate it is too high and an alarm will ring. If the voltage is lower than a safe value or nonexistent, an LL will be displayed and an alarm will ring. When the alarm rings, the relative value will also blink on the screen for easy identification of the problem.



Link: DreamwareComputers