The Bambu Lab X1 / X1 Carbon has 2 different versions for the Lidar sensors. In this article you will be able to identify which version you have which is needed if you have to replace the TH board set or Lidar.


The version of lidar you have will not change how well it performs but the single red laser and dual red lasers require different TH boards.


  • Method 1:

It's possible to identify which version you have by reading the Lidars serial number,

If the Micro Lidar SN starts with 00ExxB, it means that the lidar is a dual red version, and the TH board should also be a dual red version with a serial number SN starting with 003xxC, 003xxD, or 003xxY.


If the Micro Lidar SN starts with 00ExxA, it means that the lidar is a single red version, and the TH board should also be a single red version with a serial number SN starting with 003xxA or 003xxB.

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  • Method 2:

On the back of the tool head you can observe the PCB of the LIDAR module, if it has a small PCB then it's an IR-blue laser combination. If there is no small PCB, it is a dual infrared laser.

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  • Method 3:

It's possible to determine which Lidar version you have by recording it with your phone's camera, the wavelength of the dual laser is in the infrared band which is invisible to the naked eye, and the color can only be observed through the camera video. In addition, some cameras have an IR cut function, which may make it challenging to see infrared light clearly. In general, however, this method is not necessarily accurate for confirming the laser model. Please be assured that if there is a problem with the LiDAR (for example, the laser does not function), the HMS will notify you.


In the image below is an example, the Lidars lasers is visible to the camera but would be hard or impossible to see with the naked eye.


This should only be done to verify your claims, the best way to find the version is with Method 1 and 2.

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End of guide.