| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-275MU | MTRAK M275 MESSAGE UNIT | Digi International |
| 2 | 27E194 | SOCKET 4POLE R10 SERIESRelay Socket Through Hole | TE Connectivity Potter & Brumfield Relays |
| 3 | SP4-DC24V | RELAY GEN PURPOSE 4PDT 10A 24VGeneral Purpose Relay 4PDT (4 Form C) 24VDC Coil Socketable | Panasonic Electric Works |
| 4 | MY2N DC12 (S) | RELAY GEN PURPOSE DPDT 5A 12VGeneral Purpose Relay DPDT (2 Form C) 12VDC Coil Socketable | Omron Automation and Safety |
| 5 | KHAU-17D12-12 | RELAY GEN PURPOSE 4PDT 5A 12VGeneral Purpose Relay 4PDT (4 Form C) 12VDC Coil Socketable | TE Connectivity Potter & Brumfield Relays |
| 6 | G5LE-1A4 DC5 | RELAY GEN PURPOSE SPST 10A 5VGeneral Purpose Relay SPST-NO (1 Form A) 5VDC Coil Through Hole | Omron Electronics Inc-EMC Div |
| 7 | 70L-IAC | INPUT MODULE AC 8MA 5VDCAC Input Module Output Module 6mA 5VDC Output 0 ~ 140VAC (120VAC Nom) Supply | Grayhill Inc. |
| 8 | 24A072 | SPRING RELAY HOLD-DOWNClip, Hold Down 27E166; 27E122; 27E123 | TE Connectivity Potter & Brumfield Relays |
| 9 | DR2260A30VRJ | RELAY SSR 600V 30A DIN RAIL | Sensata-Crydom |