| Output Sound Pressure Levels | 94dB re 20uPa under reference Conditions |
|---|---|
| Output Frequency | 125Hz ±2% and 250Hz ±2% |
| Total Harmonic Distortion | Less Than 4% |
| Frequency Weighting | A / C |
| Reference Condition | Temperature 23℃(73℉) Static press 103hpa Relative humidity 50% |
| Accuracy of sound pressure level | Understated reference environment conditions ±0.5dB |
| Battery test | Operate: Green LED indicator Low battery: Red LED indicator |
| Battery | 9V battery |
| Dimensions | 113x63x44 mm |
| Weight | Approx.170g |