| 型号 model | ar-814 | ar-824 |
| 测量范围 measuring range | 30～130dba 35～130dbc | 30～130dba 35～130dbc |
| 测量精确度 accuracy | ±1.5db | ±1.5db |
| 频率响应 frequency range | 31.5hz-8.5khz | 31.5hz-8.5khz |
| 动态范围 linearity range | 50db | 50db |
| ac/dc 信号输出 ac/dc output | √ | √ |
| 自动关机功能 auto power shut off | √ | √ |
| 低电显示功能 low battery indication | √ | √ |
| 过载提示 over range indication | √ | √ |
| 数位及分辨率 digit & resolution | 5digits & 0.1db | 5digits & 0.1db |
| 动态特性选择 time weighting se-lection | fast/slow | fast/slow |
| 麦克风 microphone | 1/2 inch electret condenser microphone 1/2 英寸电容式麦克风 | |
| 频率加权特性 frequency weighting | a & c | a & c |
| 测量档位选择 sound measuring level se-lection | √ | √ |
| zui大值锁定 max hold function | √ | √ |
| 取样频率 sampling frequency | 2 times/sec | 2 times/sec |
