| Product Name | Sound Level Meter |
| Model | SL4200 |
| Frequency Range | 31.5Hz to 8KHz |
| Measuring Range | (30)32-130dB |
| Frequency Weighting | A/C |
| Microphone | 1/2" Polarization Capacitance Microphone |
| Display | 4 Digits LCD Display |
| Resolution | 0.5dB |
| Display Update | 2 Times/sec |
| Time Weighting | FAST: 125ms SLOW: 1 second |
| Measuring Ranges | Range 1: (30)32dB to 70 dB Range 2: 60dB to 100 dB Range 3: 90dB to 130 dB |
| Accuracy | 2dB(94dB1kHz) |
| Dynamic Range | 40dB |
| MAX Hold | "MAX" |
| Power Supply | 1 * 9V Battery (model 6F22, NOT included) |
| Operation Environment | 0-40 C/32-104F; 10-75%RH |
| Storage Environment | -10-50C/14-122F; 10-80%RH |
| Weight | 114g / 4oz |
| Dimensions | 185 * 65 * 35mm (L * W * H) |
| Package Size | 20 * 15 * 5.5cm (L * W * H) |
| Package Weight | 379g / 13.38oz |