Ultrasonic distance measurer 1.2.Laser pointer 2.Frequency: 40 kHz 3.battery:9V 4.MOQ:100pcs Ultrasonic Distance Measurer with Laser Point rangefinder Description: Ultrasonic apparatus is completely suitable for a family to decorate, buy air conditioning calculation area of volume, real estate agent or construction workers must, need room and room area is fast measurement tools, ultrasonic ...
