| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275EU | MTRAK M275 EVENT UNIT | Digi International |
| 2 | D3202 | RELAY TELECOM DPDT 2A 12VTelecom Relay DPDT (2 Form C) Through Hole | TE Connectivity Potter & Brumfield Relays |
| 3 | RSE116185 | 4 POLE/10 AMP TRACK MOUNT WCRelay | Amphenol Pcd |
| 4 | 8869420000 | SCM-I 4CORelay Socket DIN Rail | Weidmuller |
| 5 | G7J-2A2B-B-W1 DC24 | RELAY GEN PURPOSE 4PST 25A 24VGeneral Purpose Relay 4PST-NO/NC (2 Form A, 2 Form B) 24VDC Coil Chassis Mount | Omron Automation and Safety |
| 6 | LY2N-DC12 | RELAY GEN PURPOSE DPDT 10A 12VGeneral Purpose Relay DPDT (2 Form C) 12VDC Coil Socketable | Omron Automation and Safety |
| 7 | G5CA-1A-TP-E DC12 | RELAY GEN PURPOSE SPST 15A 12VGeneral Purpose Relay SPST-NO (1 Form A) 12VDC Coil Through Hole | Omron Electronics Inc-EMC Div |
| 8 | RJ1S-CL-D24 | RELAY PLUG-IN SPDT 12A 24VDCGeneral Purpose Relay SPDT (1 Form C) 24VDC Coil Socketable | IDEC |
| 9 | 70MRCK24-HS | I/O MOUNTING BOARD MINI 24POSI/O Module Rack 24 Channel | Grayhill Inc. |