Cirrus Research offers a range of Class 1 and Class 2 acoustic calibrators designed for accurate field calibration of sound level meters and noise dosimeters.
Our acoustic calibrators are compatible with any make or model, making them a reliable choice for professionals who need fast, dependable calibration checks on site or in the workplace.

The range includes PTB Pattern Approved acoustic calibrators, with single-level and dual-level options delivering 94 dB and 114 dB calibration signals. This allows users to verify instrument performance with confidence and meet relevant standards for noise measurement and compliance.