| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | KHU-17D16-24 | RELAY GEN PURPOSE 4PDT 1A 24VGeneral Purpose Relay 4PDT (4 Form C) Socketable | TE Connectivity Potter & Brumfield Relays |
| 3 | G6J-2FS-Y DC4.5 | RELAY TELECOM DPDT 1A 4.5VTelecom Relay DPDT (2 Form C) Surface Mount | Omron Electronics Inc-EMC Div |
| 4 | RSE500402 | SMITHSRelay | Amphenol Pcd |
| 5 | JRE400411 | QUICK MOUNT, 4 POLE WCRelay | Amphenol Pcd |
| 6 | 27E128 | R10 RELAY SOCKETS-TERMINALSRelay Socket Through Hole | TE Connectivity Potter & Brumfield Relays |
| 7 | 9-1393809-1 | RELAY SOCKET PCB SIZE IIRelay Socket Through Hole | TE Connectivity Potter & Brumfield Relays |
| 8 | PA1A-PS | SOCKET PCB FOR PA1A RELAYSRelay Socket Through Hole | Panasonic Electric Works |
| 9 | HE1AN-DC6V | RELAY GEN PURPOSE SPST 30A 6VGeneral Purpose Relay SPST-NO (1 Form A) 6VDC Coil Chassis Mount | Panasonic Electric Works |