For spares as untested
Hornby R951 Zero 1 Slave Control Unit Untested Boxed - See Photos GC
Hornby R951 Zero 1 Slave Control Unit Untested Boxed Unused
2X Hornby Railways Zero 1 R951 Slave Control Unit Boxed
HORNBY RAILWAYS - ZERO 1 - R951 SLAVE CONTROL UNIT - 2 OFF
Hornby Railways Zero 1 R951 Slave Control Unit In Box **NOT DCC** (A)