| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | 911343 | RSM 2 24VDC DPDT SOCRelay | Weidmuller |
| 3 | 2-1416100-3 | RELAY SOCKETRelay | TE Connectivity Potter & Brumfield Relays |
| 4 | 2900443 | TERM BLOCK INTERFACERelay Socket DIN Rail | Phoenix Contact |
| 5 | VCFM-1002 | RELAY SOCKET HOUSING 5 POSRelay Housing Wiring Harness, Interlockable | TE Connectivity Potter & Brumfield Relays |
| 6 | RP420006 | RELAY GENERAL PURPOSE DPDT 8A 6VGeneral Purpose Relay DPDT (2 Form C) 6VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 7 | AHES3290 | RELAY GEN PURPOSE DPST 35A 6VGeneral Purpose Relay DPST-NO (2 Form A) 6VDC Coil Through Hole | Panasonic Electric Works |
| 8 | 9002-05-11 | RELAY RF SPST 500MA 5V | Coto Technology |
| 9 | ARE10A4H | RELAY RF SPDT 500MA 4.5V | Panasonic Electric Works |