| ： | | GENERAL FEATURES & SPECIFICATIONS | 一般功能和规格 | | AR-811 | AR-821 | AR-831 | | | Measuring Range | 0.30～15m | 0.30～15m | 0.30～15m | | | 测量范围 | 10inch～50foot | 10inch～50foot | 10inch～50foot | | | Accuracy | ±1% | ±1% | ±1% | | | 测量精确度 | | | Measure In Imperial/Metric | √ | √ | √ | | | 公英制转换 | | | Dynamic Display | √ | √ | √ | | | 动态读数显示 | | | Laser Pointer Aiming | √ | √ | √ | | | 激光定位 | | | Data Store /Recall | √ | ____ | ______ | | | 存储/调出数据 | | | Computer Area And Volume | √ | √ | √ | | | 计算面积和体积 | | | Sum Of Length | √ | √ | √ | | | 计算长度累加 | | | Auto/Manual Shut-off | √ | √ | √ | | | 自动/手动关机 | | | LCD Backlight | √ | √ | √ | | | LCD 背光显示 | | | response Time | 2s | 2s | 2s | | | 响应时间 | | | Measureing Benchmark Setup | √ | √ | √ | | | 测量基准设置 | | | KeySound,Beeps For Wrong Reading And Reading Confirmation | √ | √ | √ | | | | 按键声提示,出错声音提示 | √ | √ | √ | | | 以及确认声音提示 | |
| | | GENERAL CHARACTERISTICS | 一般特征 | | Power | 9V Battery(6F22) | 9V Battery(6F22) | 4*1.5VAAA Battery | | 供电 | 9v(6F22) | 9v(6F22) | 4节1.5V AAA电池 | | LCD size | 35*23.5mm | 35*23.5mm | 35*23.5mm | | LCD尺寸 | | Product Color | Dark Gray | Dark Gray | Ivory | | 产品颜色 | 深灰 | 深灰 | 象牙白 | | Product Net Weight | 150g | 150g | 115g | | 产品净重 | | Product Size | 180*53*39mm | 180*53*39mm | 100*54.5*21.5mm | | 产品尺寸 |
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