from the link you provide it says it's a serial device at 9600 baud. If you send hex commands to it then it will send data back.
Baud rate:9600bps;
data bit:8 bit;
Start bit:1bit;
Stop Bit:1bit;
Parity:none.
Remarks: Because the environment light intensity is too large, 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.
• ADDR Device Address•Postion is 1, count from the top , when item is 0, count from the end (FA 04 08 01 F9),The default setting is from end•CS check byte, 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)
The command to read data when the parameter is factory setting:Single measurement:80 06 02 78 Continuous measurement:80 06 03 77
Shutdown device:
80 04 02 7A
Set address:
FA 04 01 80 81
Distance modification:
FA 04 06 2D 01 CE -1
FA 04 06 2B 01 D0 +1
time interval (1S) :
FA 04 05 01 FC
Set start point:
FA 04 08 01 F9 Top
FA 04 08 00 FA back ends
Set range:
FA 04 09 05 F4 5m
FA 04 09 0A EF 10m
FA 04 09 1E DB 30m
FA 04 09 32 C7 50m
FA 04 09 50 A9 80m
Set frequency:
FA 04 0A 00 F8
FA 04 0A 05 F3 5
FA 04 0A 0A EE 10
FA 04 0A 14 E4 20
Set resolution:
FA 04 0C 01 F5 1mm
FA 04 0C 02 F4 0.1mm
Set start the measurement when power on:
FA 04 0D 00 F5 turn off
FA 04 0D 01 F4 turn on
Single measurement (broadcast)
FA 06 06 FA
Read cache:
80 06 07 73
Control laser:
80 06 05 01 74 open
80 06 05 00 75 Close
there is also a discussion on it here with some code ,
https://forum.arduino.cc/t/laser-rangefinder-max485-communication/1154004then theres a write up here with sample code , note the dropbox links dont work
https://blog.qartis.com/laser-distance-meter-update-serial-commands-timing-measurements/and finally a arduino library that may work
https://github.com/hackerceo/LaserRanger
darkspr1te