Measuring Frequency: 5HZ,10HZ,20HZ(Adjustable); Measurable velocity of moving objects:less 2m/sADDR Device Address. Postion is 1, count from the top , when item is 0, count from ( 04 08 01 F9),The default setting is from end check , it sums all the bytes in front,Returns the reverse, plus 1, in the data returned by single measurements and successive measurements, in which the quotes are part of the data,Format is ASCII sample:123.456 m display 31 32 33 2E 34 35 36 ADDR Default value 80(128)NOTICE: If you need to get a higher frequency, you need to sacrifice the accuracy of the measurement. When set to 20hz (send 04 0A 14 E4), the accuracy in continuous measurement mode will become +-4mm; if the frequency is set to the lowest frequency (send ) 04 0A 00 F8), the accuracy in continuous measurement mode will be within 1mm. In single measurement mode (send 80 06 02 78), the accuracy is always within 1 mm.Remarks: Because the environment light intensity is too , the ambient temperature is too high or too low, the reflector is too weak or too strong, or the target of a rough surface, different measurement objectives and measurement environment may cause some error of the measurement range or measurement results.Parameters:Power SupplyVoltage:DC3V-3.3VCurrent:100mAMeasuring Range:0.01-80mMeasurement Accuracy(standard deviation):1.mmDistance Unit:mLaser Type:620-690nmLaser Class:class IIBaud rate:9600bpsdata bit:8 bitStart bit:1bitStop Bit:1bitParity:noneThe to read data when the parameter is factory setting:Single measurement:80 06 02 78 Continuous measurement:80 06 03 77Shutdown device:80 04 02 7ASet address: 04 01 80 81Distance modification: 04 06 2D 01 -1 04 06 2B 01 D0 +1time interval (1S): 04 05 01 Set start point: 04 08 01 F9 Top 04 08 00 back endsSet range: 04 09 05 F4 5m 04 09 0A EF 10m 04 09 1E DB 30m 04 09 32 C7 50m 04 09 50 A9 80mSet frequency: 04 0A 00 F8 04 0A 05 F3 5 04 0A 0A EE 10 04 0A 14 E4 20Set resolution: 04 0C 01 F5 1mm 04 0C 02 F4 0.1mmSet start the measurement when power on: 04 0D 00 F5 turn off 04 0D 01 F4 turn onSingle measurement (broadcast) 06 06 Read cache:80 06 07 73 Control laser:80 06 05 01 74 open80 06 05 00 75 CloseColour:BlackMaterial:PlasticPackage Contents:1 * moduleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.