180 102 0 22 x xx xxxx
110  F2 2 21 x xx xxxx
110  F2 2 19 x xx xxxx 
180 504 0 xx x xx xxxx

Regarding serial numbers, it seems the digits for models have been extended by one digit, 102 is shown as version in the Soliscloud for a S6-GR1P1.5K-M-DC where as F2 is shown for a RHI-4.6K-48ES-5G-EU as well as RHI-4.6K-48ES (4G !, maybe distinguished by product date cut-off?). 504 is a S5-GR3P8K,