| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | SR120MP01 | RELAY SAFETY 3PST 1.25A 24VSafety Relay 3PST-NO (3 Form A) DIN Rail | Omron Automation and Safety |
| 3 | TX2-4.5V-1 | RELAY TELECOM DPDT 1A 4.5VTelecom Relay DPDT (2 Form C) Through Hole | Panasonic Electric Works |
| 4 | JC1-SS | SOCKET TERM W/CLIP FOR JC1 RELAYRelay Socket Panel Mount | Panasonic Electric Works |
| 5 | RSN112010 | 2,4 POLE/10 AMP, 3 POLE/25 AMP,Relay | Amphenol Pcd |
| 6 | HC4-PS-K | ACCY RELAY SOCKET W/CLIP HC4 PCBRelay Socket Through Hole | Panasonic Electric Works |
| 7 | 27E867 | SOCKET TERM 4P FOR KU RELAYSRelay Socket Chassis Mount | TE Connectivity Potter & Brumfield Relays |
| 8 | T9GV1L14-5 | T9GV1L14-5General Purpose Relay SPST-NO (1 Form A) 5VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 9 | 70M-IDC5G | INPUT MODULE AC/DC 6MA 5VDCAC/DC Input Module Output Module 10mA 5VDC Output 35 ~ 60VAC/DC Supply | Grayhill Inc. |