ÃÒÂÅÐàÍÕ´: à¤Ã×èͧÇÑ´àÊÕ§ Multifunctional Sound Level Meter ÃØè¹ SL-5868P Wide range: 30-130dB Built-in calibration signal of 94dB 4 measurement parameters Lp, Leq, Lmax and LN Adjustable alarm set With memory of 30 groups of measurement results and measuring conditions 0-1.3V, 10mV/dB DC output and auto range selection Adjustable auto power off RS232C interface Sturdy carry case Features IEC651 Type 2, ANSI 1.4 and Type 2 compliant Data gathered can be saved, retrieved, deleted and downloaded to computer directly Data can be exported to Microsoft Excel LED alarm output Permits 'A', 'C', or 'Flat' weighting choices and Slow/Fast response time Communicate with computer for statistics, printing and analyzing by optional cable and the software for RS232C interface Specifications Parameters: Lp, Leq, Lmax, LN. Measuring range: Lp: 30~130dB (A) , 35~130dB (C) , 40~130dB (F) Leq: 30-130dB (10s, 1m, 5m, 10m, 15m, 30m, 1h, 8h, 24h interval) LN.: 0-100% Resolution: 0.1 dB Accuracy: ±1 dB Frequency weighting: A, C and F (Flat) Frequency range: 20.0 to 12,500 Hz Built-in calibration signals: 94dB at 1kHz (sinusoidal) Memory: 30 groups max with measuring conditions and with Date and Time Stamping Time weighting: FAST 125mS , SLOW: 1 sec. DC output: 0~1.3V, 10mv = 1dB Standard Delivery 1 Digital Sound Level Meter SL-5868P (Main Unit) 1 Sponge ball 1 Operational manual 1 Sturdy carry case ¹éÓ˹ѡ : 280 ¡ÃÑÁ ¢¹Ò´ [¡ÇéÒ§ x ÂÒÇ x ÊÙ§] : 70 x 270 x 40 «Á.