希玛 SMARTSENSORAR821 超声波测距仪 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   PACKING INFORMATION 包装 包装方式1(中国) 吸塑 吸塑 吸塑 标准外箱容量 40 40 40 标准外箱尺寸 49.5*36.8*27.9cm 49.5*36.8*27.9cm 49.5*36.8*27.9cm 标准外箱毛重 6.5kg 6.5kg 6.5kg 包装方式2(Other Countries) Blister Blister Blister Quantity Per Carton 40 40 40 Carton Size 49.5*36.8*27.9cm 49.5*36.8*27.9cm 49.5*36.8*27.9cm Carton Gross Weight 6.5kg 6.5kg 6.5kg