Model 407735

      Model 407735 is a kind of digital sound level meter which includes many parts form outside appearnce: The first one is microphone; The second one is LCD display; The third one is POWER OFF & RANGE select switch; The forthone is RESPONSE & HOLD select switch; The fifth one is A/C weighting   and Calibration switch; The sixth one is calibration adjust screw for 94dB; The seventh one is reset key (resets max hold reading); The eighth one is AC/DC analog output 3.5mm phone jack; The ninth one is battery compartment and tripod mount are located on back of meter.
      Then, there are some specifications about Model 407735. Display is 3-1/2 digit (2000 count) LCD; Display update rate is 0.5 seconds; Microphone is 0.5" Electret condensor; Measurement Bandwidth is 31.5Hz to 8KHz; Dynamic range is 65dB; Measurement Range is from 35dB to 130dB (Low: 35 to 90; High: 65 to 130dB); Frequency weighting is'A' and 'C' (selectable); Accuracy is ± 2.0dB @1kHz; Resolution  is 0.1dB; Maximum Hold decay time is less than 1dB / 3min. Response time is (Fast)125 milliseconds and (Slow)1 second. Built-in calibration check is 1KHz internal sine wave @ 94dB; AC Analog output is 600 output impedance(0.65VAC rms (full scale)); DC Analog output is 100 output impedance (approx)(10mVDC / dB). Power is 9V battery; Battery life is 50 hours (typical)(Low battery indicator alerts user); Operating temperature is 32^oF to 104^oF (0^oC to 40^oC);Operating humidity is 10% RH to 90% RH; Dimensions are 9.45 x 2.68 x 1" (240 x 68 x 25mm); Weight is 6.75oz (210g).
      In conclusion , this is a simple introduction about Model 407735 and if you are interested in it or you want to know more about it , please pay more attention to our web !Thanks for your concern of our information!