CALL: A.WIHARTA 081294124885 085778084789 087784022201   Info Produk Features: 3-1/ 2 digit LCD display with maximum reading of 2000. Test Ranges: 30dB to 130dB, LO 30dB to 80dB, MED 50dB to 100dB, and HI 80dB to 130dB. Accuracy: ± 1.5dB ( ref 94dB) at 1kHz. Resolution: 0.1dB. Microphone: 1/ 2 Electret condenser microphone. Frequency Weighting: A and C. Time Weighting: FAST, SLOW. Autoranging, Auto Power Off, Data Hold, and Min/ Max functions. Dynamic Range: 50dB. Frequency Range: 31.5Hz to 8kHz. AC/ DC output signal for use with dataloggers. Dimensions: 280mm ( L) x 80mm ( W) x 32mm ( D) Weight ( including battery) : 300g