Sibling comparison
The XU2M18MA230R: The closest sibling also marked as a receiver is the XU2M18MB230KR. Both are through-beam receivers in the same 18 mm metal barrel, but the MB230KR uses a 2 m cable while the MA230R relies on a connector (1/2-20 UNF 3-pin micro male). That connection difference means a drop-in swap requires checking gland plate and pre-wired cable length — the optical performance and power range are identical.