Display | LCD size : 52 mm x 32 mm LCD with green backlight ( ON/OFF ). |
Circuit | Custom one-chip of microprocessor LSI circuit |
Function | dB ( A & C frequency weighting ), Time weighting ( Fast, Slow ), Peak hold, Data hold Record ( Max., Min. ). |
Measurement Range | 30 - 130 dB |
Resolution | 0.1 dB |
Operating Humidity | Less than 85% R.H. |
Calibrator: | B & K (Bruel & kjaer), multi-fuction ACOUSTIC CALIBRATOR Type 4226. |
Power Supply | * Alkaline or heavy duty DC 1.5 V battery ( UM3, AA ) x 6 PCs, or equivalent. * DC 9V adapter input. ( AC/DC power adapter is optional ). |