| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275EU | MTRAK M275 EVENT UNIT | Digi International |
| 2 | HL2-SFD-K | SOCKET TERM SCREW DIN HL2 RELAYRelay Socket DIN Rail | Panasonic Electric Works |
| 3 | 911373 | RSM 2 120VAC DPDT SORelay | Weidmuller |
| 4 | 25622080 | SOCKET DIN RAIL RELAY 11PIN OCTRelay Socket DIN Rail | Crouzet |
| 5 | SP4-SF | SOCKET RELAY SCREW FOR SP4 RELAYRelay Socket Chassis Mount | Panasonic Electric Works |
| 6 | RH4B-ULDC24V | RELAY PLUG-IN 4PDT 10A 24VDCGeneral Purpose Relay 4PDT (4 Form C) 24VDC Coil Socketable | IDEC |
| 7 | 8-1393238-4 | RELAY GEN PURPRelay Coil | TE Connectivity Potter & Brumfield Relays |
| 8 | 70GRCK8-HL | I/O MOUNTING BOARD G5 8POSI/O Module Rack 8 Channel | Grayhill Inc. |
| 9 | CRF05-1AS | RELAY RF SPST 500MA 5V | Standex-Meder Electronics |