| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | RSE116690-S | STAINLESS STEEL ALTERNATIVERelay | Amphenol Pcd |
| 3 | 79694002 | 11-PIN BACK CONNECTING SOCKETRelay Socket Chassis Mount | Crouzet |
| 4 | 2963954 | RELAY SAFETY 4PST 6A 24VSafety Relay SPST-NO (1 Form A) x 4 24VAC/DC Coil DIN Rail | Phoenix Contact |
| 5 | RR2P-ULDC24V | RELAY PLUG-IN DPDT 10A 24VDCGeneral Purpose Relay DPDT (2 Form C) 24VDC Coil Socketable | IDEC |
| 6 | ADJH23012 | RELAY GEN PURPOSE SPST 50A 12VGeneral Purpose Relay SPST-NO (1 Form A) 12VDC Coil Through Hole | Panasonic Electric Works |
| 7 | HE1AN-DC6V | RELAY GEN PURPOSE SPST 30A 6VGeneral Purpose Relay SPST-NO (1 Form A) 6VDC Coil Chassis Mount | Panasonic Electric Works |
| 8 | V23057B 2A401 | RELAY GEN PURPOSE SPDT 8A 12VGeneral Purpose Relay SPDT (1 Form C) 12VDC Coil Through Hole | TE Connectivity Potter & Brumfield Relays |
| 9 | 70GRCM32-HL | I/O MOUNTING BOARD G5 32POSI/O Module Rack 32 Channel | Grayhill Inc. |