| general features & specifications | 一般功能和规格 | | | | | | 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 | | ℃/℉ se-lection | √ | √ | √ | | ℃/℉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 se-lection | √ | √ | √ | | 背光显示选择功能 | | laser target pointer se-lection | √ | √ | √ | | 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 | |
