Noise Meters
Calibration Sound Source Device
Model：ST04
Specifications
| Frequency | 1000.0Hz |
| Operating Temperature | -10 °C – 50 °C |
| Operating Humidity | 25%RH – 90%RH |
| Power Supply | 2x1.5V (AA)battery |
| Weight | 75g |
| Dimensions | 70×70 ×35mm |
Part of the specification table has been translated. See the full parameter table on the Chinese page
