| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | G5V-1-DC3 | RELAY GENERAL PURPOSE SPDT 1A 3VGeneral Purpose Relay SPDT (1 Form C) Through Hole | Omron Electronics Inc-EMC Div |
| 3 | 2946706 | RELAY GEN PURPOSERelay | Phoenix Contact |
| 4 | RSE116754 | LOW PROFILERelay | Amphenol Pcd |
| 5 | JRE400300 | QUICK MOUNT, 4 POLERelay | Amphenol Pcd |
| 6 | 2963802 | RELAY SAFETY 4PST 6A 24VSafety Relay SPST-NO (1 Form A) x 4 24VAC/DC Coil DIN Rail | Phoenix Contact |
| 7 | ARS14Y24 | RELAY RF SPDT 500MA 24V | Panasonic Electric Works |
| 8 | ARS34Y4HZ | RELAY RF SPDT 500MA 4.5V | Panasonic Electric Works |
| 9 | ARA220A03 | RELAY RF DPDT 1A 3V | Panasonic Electric Works |