| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | AGN200A4HZ | RELAY TELECOM DPDT 1A 4.5VTelecom Relay DPDT (2 Form C) Surface Mount | Panasonic Electric Works |
| 3 | RSE500311 | SMITHSRelay | Amphenol Pcd |
| 4 | P2CF-08 | SOCKET DIN MNT 8PIN SCREW TERMRelay Socket DIN Rail | Omron Automation and Safety |
| 5 | G5RL-1A-E-TV8 DC24 | RELAY GEN PURPOSE SPST 16A 24VGeneral Purpose Relay SPST-NO (1 Form A) 24VDC Coil Through Hole | Omron Electronics Inc-EMC Div |
| 6 | 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 |
| 7 | MS-4H | I/O MOUNTING BOARD MINI 4POSI/O Module Rack 4 Channel | Sensata-Crydom |
| 8 | PB-16C4 | I/O MOUNTING BOARD C4 16POSI/O Module Rack 16 Channel | Sensata-Crydom |
| 9 | 70L-IDCB | INPUT MODULE DC 18MA 5VDCDC Input Module Output Module 6mA 5VDC Output 0 ~ 32VDC Supply | Grayhill Inc. |