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Hand held, battery powered, durable.
ZM1 - Impedance meter with calculated watts function. Measures the impedance of components (resistors, capacitors etc.), loudspeakers and distributed loudspeaker systems. Also will calculate the wattage to be produced on an installed speaker system. deutsch . espaņol . italiano
ZM1P - The ZM1 Meter with an added Protection Circuit and Tone Generator.