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11 Holiday Gift Ideas For Security Techs
In the past, it was somewhat expensive to find an SPL meter that met ANSI S1.4a requirements as listed in NFPA 72 14.4.2.2 (15), but the dBchecker DB02 from SDi can be found for under $100. It tests 40dB to 130 dB over four ranges, according to the company, with readings on a four-digit LCD display. — Dolph
