| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | AGQ21TS4HX | RELAY GEN PURPOSE DPDT 2A 4.5VGeneral Purpose Relay DPDT (2 Form C) Surface Mount | Panasonic Electric Works |
| 3 | RSL112202 | MCDONNEL DOUGLASRelay | Amphenol Pcd |
| 4 | 2820149 | BASIC TERMINATION BLOCKS 4POSRelay Socket DIN Rail | Phoenix Contact |
| 5 | 2-1904045-7 | V23333Z0002B049-EV-100Relay Socket Through Hole | TE Connectivity Potter & Brumfield Relays |
| 6 | RT234024 | RELAY GEN PURPRelay Coil | TE Connectivity Potter & Brumfield Relays |
| 7 | 2972893 | CONN TERM BLOCKI/O Module Rack Channel | Phoenix Contact |
| 8 | 70G-IAC5A | INPUT MODULE AC 6MA 5VDCAC Input Module Output Module 10mA 5VDC Output 180 ~ 280VAC (240VAC Nom) Supply | Grayhill Inc. |
| 9 | ARS16Y4H | ARS RELAY 1 FORM C 4.5V | Panasonic Electric Works |