Home / Products / Advanced Panel Meters / Power Meters Power Meters Application Application Current Flow Frequency Power Temperature Voltage Input Input 0 - 10,000A via CT 0 - 10,000KA via CT 0 - 10V DC 0 - 1V DC 0 - 200uA 0 - 300V AC (L-N) 0 - 400Hz 0 - 50mA 0 - 50mA DC 0 - 5A Direct 0 - 600V AC (L-L) 0 - 600V DC/AC (+/-) 0.001 – 60KHz (NPN, PNP or Push-Pull) 2 - 400Hz 50 - 60Hz Power Meter A universal, digital 3 phase power meter MAX Meter M21 An all-in-one meter for measuring amps, voltage, frequency or power