CMR

3 coding systems recognise this code

NEC / UL (USA)

SymbolMeaning
CCommunications cable
MMultipurpose rating (reading by usage, UNVERIFIED)
RRiser
CMRCommunications cable, riser rated (vertical shafts, UL 1666). 300 V, 75 C. UL 444; NEC 800.179(B)

China

SymbolMeaning
CShipboard or Marine Cable
MWatertight
RFlexible Cable

KEMA

SymbolMeaning
CChloroprene Rubber
MSingle-Wire, Round-Section, Class 1
RNatural Rubber