Quantity   Component name
1 × Stepping switch of any kind
2 × Relay with 24V coil
16 × Various 12V relays for logic circuitry
2 × Power Transformers
3 × Fuses in various places
3 × Full Bridge Rectifiers Stepping switch requires its own rectifier because otherwise it draws lot of current and messes with other pover consumers
6 × Various capacitors for power rectification and relay delays
1 × Power cord