Rion NC-74 Acoustic Calibrator

The performance of the NC-74 is suitable for calibration of high-precision sound level meters. The unit is compact, lightweight, and easy to use. Two AA alkaline batteries will power the unit for more than 30 hours of continuous use at room temerature

Features:

• Compliant with IEC 60942 Class 1
• Allows calibration of 1-inch and 1-2-inch microphones
• No need for atmospheric pressure compensation
• Frequency 1 kHz, SPL 94dB