Frequency counter “inno”

For quantitative measurement of countable events, e.g. together with the “inno” measuring microphone DW340-2M. 4-digit LED display, 26 mm high, with a digital range indication. Technical data: measurement modes manual, auto and pulse; intervals for manual and auto modes 0.1 / 1 / 10 s; input signal selection AC/DC; start–stop / reset switch; two 4 mm safety jacks for connecting to a signal source, suitable for recording voltages from 300 mVeff upwards; a monitor LED indicates readiness to count incoming signals. Power supply: 4 x 1.5 V AA cells (included), rechargeable cells or an external 6 V / 500 mA supply (P3120-6N). ABS plastic case; dimensions approx. 160 x 120 x 45 mm; weight approx. 490 g.