B-Stock, Digital Sound 8922 sound level meter - 31.5Hz-8kHz range (+/-1.5db), max-hold function, fast/slow display, connections: RS 232, AC and DC out, 9V DC, IEC 651/type 2 and ANSI S1.4/type 2 (optional 282263 USB Cable and Software CDR + PC...
Thomann Italia