The 4231 sound level calibrator is a compact, battery-operated portable sound source used specifically to calibrate sound meters and other sound measurement instruments.
This sturdy, stable instrument complies with EN/IEC 60942, Class LS and Class 1 and ANSI S1.40-1984 standards, compatible with 1" and 1/2" Bruel & Kjaer microphones (1/4" and 1/8" with an adapter).
94.0 dB ± 0.2 dB / 114.0 dB ± 0.2 dB
Protective leather case
2 alkaline batteries (AA)
200 hours of continuous operation
Turns off automatically when
disconnected from the microphone
Option for installation on a dedicated kit,
for housing on a multipurpose bracket
Sturdy design with
compact dimensions
