超声波测距仪AR821参数、特点、说明超声波测距仪AR821GENERALFEATURES&SPECIFICATIONS一般功能和规格AR-811AR-821AR-831MeasuringRange0.30～15m0.30～15m0.30～15m测量范围10inch～50foot10inch～50foot10inch～50footAccuracy±1%±1%±1%测量精确度MeasureInImperial/Metric√√√公英制转换DynamicDisplay√√√动态读数显示LaserPointerAiming√√√激光定位DataStore/Recall√__________存储/调出数据ComputerAreaAndVolume√√√计算面积和体积SumOfLength√√√计算长度累加Auto/ManualShut-off√√√自动/手动关机LCDBacklight√√√LCD背光显示responseTime2s2s2s响应时间MeasureingBenchmarkSetup√√√测量基准设置KeySound,BeepsForWrongReadingAndReadingConfirmation√√√按键声提示,出错声音提示√√√以及确认声音提示GENERALCHARACTERISTICS一般特征Power9VBattery(6F22)9VBattery(6F22)4*1.5VAAABattery供电9v(6F22)9v(6F22)