The Verifier is a special type of sound level meter which offers simplified methodology for measurement of Speech Transmission Index-Public Address (STI-PA) to ensure voice actuated fire alarms, mass communications and PA systems are clearly understood in an emergency.

Specifications

Battery Life	8 hours
Data Logging	15 Second Intervals
Measurement Parameters	STI-PA, CIS, SPL, Average
Measurement Range	50 to 140 Decibel
Microphone Class/Type	Type 1
Net Weight	19 Ounce
Power Source	(4) "AA" Alkaline Cells, Optional NiMH Cell
Product Type	Sound Level Meter
Response	Fast, Slow
Standards/Approvals	IEC 60268-16 (2003), NFPA 72 Annex E, DOD United Facilities Criteria UFC-4-021-01
Value Weighting	A, F

Standard accessories

The Verifier Class 1 with 1/1 Octave Filter Speech Intelligibility Meter kit includes

STI-PA test tones Player,
(4) disposable "AA" alkaline batteries,
56-164 Wrist Strap,
59-344 Windscreen,
56-990 Calibrator Adapter,
53-575 USB Cable,
17-524 SD Memory Card and
53-711 Storage Case.

Recommended options

3M™ Verifier Type 2 STIPA Meter Verifier-2K, Test Tone CD and Player 1 kit/cs

3M™ Verifier Type 1 STIPA Meter, Test Tone CD and Player Verifier-1K 1 kit/cs

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