Piezo Ceramic Testing Device works on frequency range of 25, 50,100, 200 and 290 Hz [60 Hz line]; 30, 60, 120, 180, 250 and 290 Hz. The Testing Device is designed with resolution of range &plusmin; 1 count up to &plusmin; 3. The Testing Device operates on force of 0.1 or 0.2 Newtons. The Piezo Ceramic Testing Device can offer test results on different parameters.