| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | SP4-PS | SOCKET PCB FOR SP4 RELAYSRelay Socket Through Hole | Panasonic Electric Works |
| 3 | 154746-1 | RELAY BASE HSG. NATURALRelay | TE Connectivity Potter & Brumfield Relays |
| 4 | 27E928 | SOCKET RELAY DP-5P SOLDERRelay Socket Panel Mount | TE Connectivity Potter & Brumfield Relays |
| 5 | G9EA-1-CA DC24 | RELAY GEN PURPOSE SPST 100A 24VGeneral Purpose Relay SPST-NO (1 Form A) 24VDC Coil Chassis Mount | Omron Electronics Inc-EMC Div |
| 6 | 2912497 | RELAY GEN PURPOSE DPDT 6A 12VGeneral Purpose with Socket Relay DPDT (2 Form C) 12VDC Coil DIN Rail | Phoenix Contact |
| 7 | G2RV-SR700 DC12 | RELAY GEN PURPOSE SPDT 6A 12VGeneral Purpose with Socket Relay SPDT (1 Form C) 12VDC Coil DIN Rail | Omron Automation and Safety |
| 8 | RP818730 | RELAY GEN PURPOSE SPDT 12A 230VGeneral Purpose Relay SPDT (1 Form C) 230VAC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 9 | 1462050-2 | RELAY RF SPDT 2A 5V | TE Connectivity Potter & Brumfield Relays |