| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | RSE112044-S | STAINLESS STEEL ALTERNATIVERelay | Amphenol Pcd |
| 3 | RSE116693 | LOW PROFILE, 2 POLE/10 AMP, WCRelay | Amphenol Pcd |
| 4 | RSE120264 | RELAY SOCKET, LESS CONTACTSRelay | Amphenol Pcd |
| 5 | PL20 | SOCKET MKWRelay Socket Panel Mount | Omron Automation and Safety |
| 6 | MY4H-US DC24 | RELAY GEN PURPOSE 4PDT 3A 24VGeneral Purpose Relay 4PDT (4 Form C) 24VDC Coil Socketable | Omron Automation and Safety |
| 7 | PCH-124D2M,000 | RELAY GEN PURPOSE SPST-NO 5A 24VGeneral Purpose Relay SPST-NO (1 Form A) 24VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 8 | 70MRCK24-DIN | I/O MOUNTING BOARD MINI 24POSI/O Module Rack 24 Channel | Grayhill Inc. |
| 9 | ARE134H | RELAY RF SPDT 500MA 4.5V | Panasonic Electric Works |