| GENERAL FEATURES & SPECIFICATIONS | 一般功能和規格 |
| | AR-841 | AR-851 |
| Measuring Range | 0.5～15m | 0.5～15m(single Unit) |
| 測量范圍 | 1～60m(Double Unit) |
| Accuracy | ±0.5% | ±1.5%(single Unit) |
| 測量精確度 | ±2%(Double Unit) |
| Measure In Imperial/Metric | √ | √ |
| 公英製轉換 |
| Operation Condition | 0～30℃ | 0～30℃ |
| 工作環境 | 30-70%RH | 30-70%RH |
| Laser Pointer Aiming Selection | √ | √ |
| 激光定位 |
| Low Battery Indication | √ | √ |
| 低電顯示功能 |
| Computer Area And Volume | √ | √ |
| 計算麵積和體積 |
| Sum Of Length | √ | √ |
| 計算長度累加 |
| Auto/Manual Shut-off | √ | √ |
| 自動/手動關機 |
| LCD Backlight | √ | √ |
| LCD 背光顯示 |
| response Time | 2s | 2s |
| 響應時間 |
| Measureing Benchmark Setup | √ | √ |
| 測量基準設置 |
| Single Or Double Unit Measure Selection | _____ | √ |
| 單機和雙機測試選擇開關 |
| WorkFrequency | 40khz | 40khz(single Unit) |
| 工作頻率 | 20khz(Double Unit) |
| Key Sound,Beeps For Wrong Reading | √ | √ |
| And Reading /confirm/iation |
| 按鍵聲提示,出錯聲音提示 |
| 以及確認聲音提示 |
