The 4-pin decoder, previously only available as a spare (X9659), is compatible with the 0-4-0 W4 Peckett from the 2020 range. before placing an order.
Hornby R8249 Digital 4-Function Locomotive Decoder Unopened
Hornby R8249 Digital 4 Function Locomotive Decoder NEW
HORNBY R7274 - Unused Digital LOCO DECODER, 4-PIN PLUG (Motor Control Only) MIB
Hornby R7274 4 Pin Decoder - Hornby Accessories for 00 Gauge Track & Train Sets
Hornby R7274 4 Pin DCC Decoder