Apart understands the installer’s needs. How easy would your life be if you always had a tool with you that could measure the impedance of your loudspeakers and speaker lines? The Apart IMPMET is an impedance meter that measures true impedance of loudspeakers and speaker lines on low impedance or in 100 Volt systems in order to avoid amplifier overload. Compared to other impedance meters, the Apart IMPMET is much more accurate because it measures at 330Hz. The impedance meter can be used in three different test ranges (0-20 Ω, 200 Ω and 2000 Ω). The 3” digital LCD display has a data-hold function and will inform you when the battery of the IMPMET is low. The IMPMET is packed in a lovely soft Apart bag that keeps your impedance meter clean and warm. Inside the box there is a very useful conversion table that helps you to calculate the power required for the impedance measured (100V or 70V).     Display: 31/2 digit LCD display with data hold, low battery and measured units indication Power: 9 VDC battery powered: 6 x AA battery (alkaline) (included) Dimensions (W x H x D): 168 x 110 x 62 mm Weight: Approx. 500 g (batteries included) Included accessories: test leads with separate alligator clips, soft bag and user manual Basic accuracy: +- 2% + 2 digits at 18 to 28°C and relative humidity <75%. Test frequency: approx. 330 Hz Standard: Double insulation, meets IC-1010. Installation CAT III 100V