... ,1~400V Safe Game Magnetic Dartboard/digital power meter/power meterGeneral Description 1, 258 series AC digital power meter is applicable for measuring voltage ... and can test digital parameters of fluorescent lamps, rectifier and core materials of electro transformer., 3,The power meter adopts IEC standard ... magnets.com.cn / http://www.magnets.com.cn/Machinery/power-meter.html AC Digital Power Meter