| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | SP4-SS | SOCKET SOLDERING FOR SP4 RELAYRelay Socket Panel Mount | Panasonic Electric Works |
| 2 | 910456 | RSM 4 110VAC SPDT 10A SKTRelay | Weidmuller |
| 3 | 1860000-1 | SOCKET RELAY 4P DIN SCREWLESSRelay Socket DIN Rail | TE Connectivity Potter & Brumfield Relays |
| 4 | PT2L7LB2 | RELAY GEN PURPOSE DPDT 12A 12VGeneral Purpose with Socket Relay DPDT (2 Form C) 12VDC Coil DIN Rail | TE Connectivity Potter & Brumfield Relays |
| 5 | T77V1D3-12 | RELAY GEN PURPOSE SPST 3A 12VGeneral Purpose Relay SPST-NO (1 Form A) 12VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 6 | XT374LB2 | RELAY GEN PURPOSE SPDT 16A 12VGeneral Purpose Relay SPDT (1 Form C) 12VDC Coil Socketable | TE Connectivity Potter & Brumfield Relays |
| 7 | 2IO4B | I/O MOUNTING BOARD STANDARD 4POSI/O Module Rack 4 Channel | TE Connectivity Potter & Brumfield Relays |
| 8 | 2900190 | CONN TERM BLOCKI/O Module Rack Channel | Phoenix Contact |
| 9 | 70MRCK8-HS | I/O MOUNTING BOARD MINI 8POSI/O Module Rack 8 Channel | Grayhill Inc. |