Main features ☆ Highly stable acoustic performance ☆ Double calibration sound pressure level 94dB and 114dB (Type 1)
☆ Simple to use ☆ Ergonomic design ☆ Complies with IEC60942: 2003 and ANSIS1.40-1984 standards ☆ Screen display prompts whether the microphone is inserted correctly ☆ Automatic shutdown function saves battery power ☆ Typical battery life is three years ☆ Calibration frequency 1kHz
Technical parameter application standard: IEC 60942: 2003
Calibrated sound pressure level:
GJY4 / CEL-110 / 1: 114.0dB +/- 0.4dB and 94.0dB +/- 0.4dB
GJY4 / CEL-110 / 2: 114.0dB +/- 0.6dB
Calibration frequency: 1kHz +/- 1Hz
Harmonic distortion: less than 1.0%
Battery: 1 9V alkaline battery, PP3, IEC 6F22
Battery life: 3 years Overall dimensions: 71 × 40 × 100mm
Weight: 170 grams, including battery
Building blocks
Shantou Chenghai Sweet Baby Toys Firm , https://www.sweetbabytoys.com