MCH-825 Handheld Digital Sound Level Meter — Indoor Decibel Tester

Model: MCH-825 Type: Digital Noise Meter Overview Compact handheld instrument for indoor sound level measurement. This meter meets the IEC-651 TYPE2 standard for sound level meters and provides reliable decibel readings for monitoring environmental noise. Technical specifications - Frequency response: 31.5Hz - 8KHz - Accuracy (1KHZ): Calibration point (94 dB, 114 dB) ± 0.5 dB, maximum ± 1.4 dB - Resolution: 0.1dB - Measurement range: 30~130dB (auto range) - Digital display: 4 digits - Frequency weighting characteristics: A - Response time: analog bar 125 milliseconds; decibels (fast) 0.5 seconds; (slow) 1 second - Microphone: electret condenser microphone Power and environmental limits - Power supply: 1.5V AAA battery * 4 (batteries not included) - Working temperature: 0 ~ + 40 °C - Working humidity: 10 ~ 80% RH - Storage temperature: - 10 ~ 60 °C