The 3 & 6 button versions are definitely supported under Z2M, while the 4 button is only confirmed working with Tasmota and Deconz according to the Blakadder site.
You might get it working in Z2M since it just seems to be a V2 version of this device, though your mileage may vary and you might need a custom converter/quirk for this.
Definitely not something I would recommend to someone who’s just starting out.
@jackjourneyman has it spot on regarding the Zigbee network requiring a mesh. You will run into issues if you only have that remote + a coordinator, especially if they’re not in the same room.
Read this and familiarise yourself with how zigbee works first - we’ll be happy to answer any further questions you might have after you’ve done your research.