This instruction manual for the Testo 816 sound level meter begins with safety advice and intended use, then describes the display and operating elements, power supply, and inserting the 9 V battery. It explains switching the instrument on and off, setting time weighting, frequency weighting, measurement range, MAX/MIN hold, display light, and AC/DC output.
The manual also covers measurement and calibration, maintenance and battery replacement, microphone care, technical specifications, and accessories and spare parts. The Testo 816 is described as a class 2 sound level meter with a 30–130 dB total range, selectable 30–80 dB, 50–100 dB, and 80–130 dB ranges, A/C frequency weighting, and Fast/Slow time weighting. This manual is written in Chinese.
| Sensor | ½ inch electret condenser measuring microphone |
|---|---|
| Total measurement range | 30 to 130 dB |
| Selectable measurement ranges | 30 to 80 dB, 50 to 100 dB, 80 to 130 dB |
| Frequency range | 31.5 Hz to 8 kHz |
| Time weighting | 125 ms (Fast) or 1 s (Slow) |
| Accuracy | ±1.0 dB at 94 dB, 1 kHz reference conditions |
| Battery | 9 V battery plate (6F22) |
| Battery life | Approximately 50 hours with alkaline manganese battery |
| Operating humidity | 10 to 90% relative humidity |
The Testo 816 measures from 30 to 130 dB and offers selectable 30–80 dB, 50–100 dB, 80–130 dB, and automatic ranges.
It uses a 9 V battery plate (006P, IEC6F22, or NEDA 1604); an external power unit can supply voltage if no battery is inserted.
Battery life is approximately 50 hours with an alkaline manganese battery.
Slow integrates over 1 second, while Fast integrates over 125 ms.