| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | TQ2SL-L2-24V | RELAY TELECOM DPDT 2A 24VTelecom Relay DPDT (2 Form C) Surface Mount | Panasonic Electric Works |
| 3 | G6A-274P-ST-US DC3 | RELAY GENERAL PURPOSE DPDT 2A 3VGeneral Purpose Relay DPDT (2 Form C) Through Hole | Omron Electronics Inc-EMC Div |
| 4 | RSN116820 | 6 POLE/5 AMP, NON ENVIRONMENTAL,Relay | Amphenol Pcd |
| 5 | JRE400101 | QUICK MOUNT, 4 POLE WCRelay | Amphenol Pcd |
| 6 | 2271235 | PLUG-IN BASE RELAY PIN PLATERelay | Phoenix Contact |
| 7 | HC4-WS-K | SOCKET WRAP-WIRE/CLIP HC4 RELAYRelay Socket Panel Mount | Panasonic Electric Works |
| 8 | DRSED | SOCKET DIN-MNT 12A 250V ED SERRelay Socket DIN Rail | Sensata-Crydom |
| 9 | PCJ-112D3M,301 | RELAY GEN PURPOSE SPST 3A 12VGeneral Purpose Relay SPST-NO (1 Form A) 12VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |