| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | RSE116660-S | STAINLESS STEEL ALTERNATIVERelay | Amphenol Pcd |
| 3 | RSE116665-S | STAINLESS STEEL ALTERNATIVERelay | Amphenol Pcd |
| 4 | 2982689 | 6.2MM PLC BASIC TERM BLOCK 5VRelay Socket DIN Rail | Phoenix Contact |
| 5 | SH1B-05C | SOCKET DIN MOUNT FINGERSAFERelay Socket DIN Rail | IDEC |
| 6 | RT184005 | RELAY GEN PURPOSE SPST 10A 5VGeneral Purpose Relay SPST-NO (1 Form A) 5VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 7 | 2911-12-321 | RELAY RF SPDT 250MA 12V | Coto Technology |
| 8 | G6ZU-1F DC3 | RELAY RF SPDT 10MA 3V | Omron Electronics Inc-EMC Div |
| 9 | 9402-12-30 | RELAY RF SPST 500MA 12V | Coto Technology |