| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | KHAU-17D16-12 | RELAY GEN PURPOSE 4PDT 1A 12VGeneral Purpose Relay 4PDT (4 Form C) Socketable | TE Connectivity Potter & Brumfield Relays |
| 3 | CUS8 | RELAY SOCKET 8 PINRelay Socket Channel, Track | Curtis Industries |
| 4 | 1-1437683-2 | INTERFACE MODULE FOR 11POS SCKTRelay Socket DIN Rail | TE Connectivity AMP Connectors |
| 5 | 2950695 | RELAY MODULE 4PDTRelay Socket DIN Rail | Phoenix Contact |
| 6 | 2820136 | TERM BLOCK 3POSRelay Socket DIN Rail | Phoenix Contact |
| 7 | JRS400500 | QUICK MOUNT, 4 POLERelay | Amphenol Pcd |
| 8 | 27E936 | SOCKET 5PIN FOR RK SER PCBRelay Socket Through Hole | TE Connectivity Potter & Brumfield Relays |
| 9 | PB114006 | RELAY GEN PURPOSE SPDT 10A 6VGeneral Purpose Relay SPDT (1 Form C) 6VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |