Distance Meter Laser Ultrasonic à¤Ã×èͧÇÑ´ÃÐÂÐ à¤Ã×èͧÁ×ÍÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ sensor ÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ ÇÑ´ÃÐÂÐàÅà«ÍÃì ÇÑ´ÃÐÂзҧ ¡ÅéͧÇÑ´ÃÐÂÐ ÅéÍÇÑ´ÃÐÂÐ à·»ÇÑ´ÃÐÂÐ > Distance Meter à¤Ã×èèͧÇÑ´ÃÐÂÐ Distance Meter à¤Ã×èèͧÇÑ´ÃÐÂÐ ´éÇÂáʧ UDM-18 ULTRASONIC DISTANCE METER WITH LASER POINT (= CB-1005) Features Aims at the object you want to measure with its laser point Measures a straight line from 0.91m to 18.288 meters (acceptable range) Error appears if the distance you measure is beyond the acceptable range Foot or Meter measurements selectable Screen light for easy reading under poorer lighting environment Auto-off mode if no operations for 4 minutes 3 memories allow you to record the length, width and height of the room Converts these measured data into area or volume Addition and subtraction function allows you to do some simple calculations Uses 1 x 9V Alkaline type 6LR61 Battery (not included) Packed in retail blister pack with instructions manual included Specification Power supply : 1x 9V Alkaline type 6LR61 Battery Measure unit : Foot or Meter Accuracy : + / - 5% Frequency : 40 kHZ (ultrasonic pickup) Working Temperature : 0 to 43 celsius degree Range : 0.91 TO 18.288 meters Dimensions (H-P-I) : 142 x 73 x 47 mm Weight (without battery) : 144.6g Laser beam Wattage < 1mW (mW = milliwatt) Wavelength : 650mm (nm = nanometer) Class 2 laser according to EN60825-1 Distance Meter Laser Ultrasonic à¤Ã×èͧÇÑ´ÃÐÂÐ à¤Ã×èͧÁ×ÍÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ sensor ÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ ÇÑ´ÃÐÂÐàÅà«ÍÃì ÇÑ´ÃÐÂзҧ ¡ÅéͧÇÑ´ÃÐÂÐ ÅéÍÇÑ´ÃÐÂÐ à·»ÇÑ´ÃÐÂÐ > Distance Meter à¤Ã×èèͧÇÑ´ÃÐÂÐ Distance Meter à¤Ã×èèͧÇÑ´ÃÐÂÐ ´éÇÂáʧ UDM-18 ULTRASONIC DISTANCE METER WITH LASER POINT (= CB-1005)