Specifications
| Meet the standard | IEC 651.2，ANSI 1.4.2 |
| Measurement parameter | Lp - Normal sound level measurement Leq - Equivalent sound level measurement Lmax - Maximum sound level measurement LN - Statistical sound level measurement |
| Measurement range | Lp~ Normal Sound Level: A Weighting: 30~130 dB C Weighing: 35~ 130 dB Linear: 40~130 dB; Leq~ Equivalent Sound Level: 30~130 dB; LN~ Statistical Sound Level measurement: 0~100% |
| Leq - Equivalent Sound Level | 30~130dB (time can be selected from 10 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 1 hour, 8 hours, 24 hours) |
| LN-Statistical Sound Level Measurement range | 0~100% |
| resolution | 0.1dB |
| Precision | 1 dB |
| Frequency Weighting | “A”/“C”/“F”（Flat） |
| time Weighted | Fast/slow |
| microphone | 12.5 mm condenser microphone |
| Memory function | 30 groups |
| Built-in calibrated signal | 94dB |
| Frequency range | 20~12,500 Hz |
| Alarm value setting | 30~130dB |
| Alarm output | LED optional relay touchpoint |
| Power supply Voltage indication | Low Voltage indication |
| Power supply Voltage | 4 AA batteries |
| External power socket | 6V, DC, 100mA |
| Dimension | 236*63*26mm |
| Weight | 170g |
Packing list
host x1, manual x1, certificate x1
After-sales instructions
Warranty days: 730 days
1. For product quality problems caused by non-human products of instruments and equipment, the manufacturer will provide free warranty services during the warranty period;
2. There is no warranty period for fragile and consumable parts, and if you find product quality problems after receiving the goods, please apply for return and exchange within 7 days, and you will not wait for the overdue ones;
[Note] For after-sales services outside the Chinese mainland, if the instrument requires repair, the shipping and possible associated taxes shall be borne by the sender. Generation address of the manual: http://en.nbchao.com/p/17131/Specification.html , which is only used by users who purchase commodities from the NBCHAO.