The Power supply tester is  a robust volatage, tester for PC-power supply: ATX, BTX and TX compliant power supplies can be tested.  LCD's indicate the status of voltage.  The PC/SPS is suitable for the ambitious hobby user as well as for a quick functional check in specilized trade.

The method of operation: Plug power supply 24PIN and P4, P6 or P8 into the corresponding jack of the power test suite.

Power on the supply will hear "DuDu" ring,if no flicker then the power supply output voltage is normal.

If a certain voltage signal was not detected or the detected voltage value ove the normal will issue a "DuDu" long buzzer. If the corresponding voltage value or PG flicker too, then the power is failed.