| AR802 | AR-842 | AR-852 | | Temperature Range | -18℃～280℃ | -18℃～330℃ | -18℃～500℃ | | 测温范围 | 0～536℉ | 0～626℉ | 0～932℉ | | Accuracy | ±2%or±2℃ | ±2%or±2℃ | ±2%or±2℃ | | 测温精确度 | | ℃/℉ Selection | √ | √ | √ | | ℃/℉温度单位转换 | | Distance Spot Ratio | 8:1 | 12:1 | 12:1 | | 测量距离比率 | | Data Hold Function | √ | √ | √ | | 数据保持显示功能 | | Auto Power Shut Off | √ | √ | √ | | 自动关机功能 | | Low Battery Indication | √ | √ | √ | | 低电显示功能 | | Backlight Display Selection | √ | √ | √ | | 背光显示选择功能 | | Laser Target Pointer Selection | √ | √ | √ | | 镭射目标显示选择功能 | | Emissivity | 0.95 | 0.95 | 0.95 | | 发射率 | | Response Time & Wavelengh | 500ms & （8-14）um | 500ms & （8-14）um | 500ms & （8-14）um | | 响应时间和响应值长 | | Repeatability | ±1%or±1℃ | ±1%or±1℃ | ±1%or±1℃ | | 重复性 |
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| GENERAL CHARACTERISTICS | 一般特征 | | Power | 9V Alkaline Battery | 9V Alkaline Battery | 9V Alkaline Battery | | 供电 | 9V碱性电池 | 9V碱性电池 | 9V碱性电池 | | LCDsize | 28.5*26.5mm | 37*35mm | 37*35mm | | LCD尺寸 | | ProductColor | Yellow+Black | Dark Gray+Yellow | Dark Gray+Red | | 产品颜色 | 黄+黑 | 深灰+黄 | 深灰+红 | | Product Net Weight | 168g | 210g | 210g | | 产品净重 | | Product Size | 146*80*38mm | 175*100*49mm | 175*100*49mm | | 产品尺寸 |
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| PACKING INFORMATION | 包装 | | 包装方式1（中国） | 彩盒包装 | 彩盒包装 | 彩盒包装 | | 标准外箱容量 | 20 | 20 | 20 | | 标准外箱尺寸 | 55.0*45.0*32.5cm | 55.0*45.0*32.5cm | 55.0*45.0*32.5cm | | 标准外箱毛重 | 14.7kg | 14.7kg | 14.7kg | | 包装方式2（Other Countries） | Blister | Blister | Blister | | Standard QuantityPer Carton | 40 | 40 | 40 | | Standard Carton Size | 62.0*44.2*28.0cm | 62.0*44.2*28.0cm | 62.0*44.2*28.0cm | | Standard Carton Gross Weight | 11.0kg | 11.0kg | 11.0kg |
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