case material:aluminum thickness :1.0mm dimensions:126x63.7x17.5mm characteristic:lcd monitorand pocket size color:black features: * easy to check atx power supply perfomance * lcd screen * atx p.g values display * lower or higher p.g values alarm * atx output connectors check * over voltage alarm * no voltage detected alarm * lower voltage detected alarm pg auto warning,lcd show each output voltage circs use in 24pin atx power supply, 8pin & 6pin & 4pin & sata product introduction the lcd-1 power supply tester is a robust voltage, tester for pc-power supply. atx,btx and itx 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 specialized trade. the methods of operation a. plug power supply 24pin and p4, p6 or p8 into the corresponding jack of the power test suite. b. power on the supply of power, will hear "dudu" ring, if no flicker then the power supply output voltage is normal. c. if a certain voltage signal was not detected, or the detected voltage value over the normal, will issue a "dudu" long buzzer; if the corresponding voltage value or pg flicker too, then the power is failed. specification voltage source : 20/24pin (atx-connector) voltage test : +12v,-12v,+5v,-5v,+3.3v,5v stand by (sb) 12v power good (pg) connectors : floppy, hdd, cdrom, sata, 4 pin (p4),8 pin (dual-cpu),6 pin (pci-express)