Otis elevator motherboard ALMCB V5.0

Otis elevator motherboard ALMCB V4.3, ALMCBV5.0, ALMCBV6.0, ALMCBV6.1, ALMCBV4.0. Also provide Otis motherboard LMCB or HAMCB. ALMCB has different versions. If the site is V6.0, only V6.0 can be used. If the site is V5.0 or below, V5.0 or V4.3 can be used (V4.3 is easier to debug than V5.0), but V6.0 cannot be used (it will report a fault, and the motherboard needs to be rewired, which is extremely risky).
HAMCB motherboard currently only has the latest version V6.1, which replaces V5.0/V4.0
LMCB can be replaced by ALMCB V5.0 or V4.3. Operator is required for debugging. Higher versions can be compatible with lower versions.