... RS232 PC interface Sound Level Meter with RS-232C (SL-5868P)Model: SL-5868P Features: * Conforms with all the essential health and ... . * With adjustable alarm set and an LED alarm output * With 0-1.3V, 10mV/dB DC output and auto range selection ... , 30m, 1h, 8h, 24h interval) *LN.: 0-100% * Resolution: 0.1dB * Accuracy: +/-1dB * Frequency range: 20.0 to 12, 500Hz * Frequency weighting: A ...