| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | T81H5D312-12 | RELAY TELECOM SPDT 1A 12VTelecom Relay SPDT (1 Form C) Through Hole | TE Connectivity Potter & Brumfield Relays |
| 3 | RH4B-ULDC24V | RELAY PLUG-IN 4PDT 10A 24VDCGeneral Purpose Relay 4PDT (4 Form C) 24VDC Coil Socketable | IDEC |
| 4 | G6B-2114P-1-US DC12 | RELAY GEN PURPOSE DPST 5A 12VGeneral Purpose Relay DPST-NO/NC (1 Form A, 1 From B) 12VDC Coil Through Hole | Omron Electronics Inc-EMC Div |
| 5 | G6D-1A-ASI-NPDC21 | RELAY GEN PURPOSE SPST 5A 21VGeneral Purpose Relay SPST-NO (1 Form A) 21VDC Coil Through Hole | Omron Electronics Inc-EMC Div |
| 6 | 70LRCK16-HL | I/O MOUNTING BRD OPENLINE 16POSI/O Module Rack 16 Channel | Grayhill Inc. |
| 7 | 35D013 | COVER DUST METAL FOR PRD RELAYSCover, Dust PRD Series | TE Connectivity Potter & Brumfield Relays |
| 8 | CA1A-12V-N-5 | RELAY AUTOMOTIVE SPST 30A 12V | Panasonic Electric Works |
| 9 | AX-1MF-10 | SIDE AUX 1NO MINI FAST-ON | Carlo Gavazzi Inc. |