| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-BU1CL | BUZZER WITH 1M CABLE | Digi International |
| 2 | 2777056 | CONN TERM BLK 4POS DIN RAIL MTRelay | Phoenix Contact |
| 3 | OT08PC | RELAY SOCKET DIN 8 PIN OCTALRelay Socket DIN Rail | Littelfuse Inc. |
| 4 | HC3-SFD-K | SOCKET SCRW W/CLIP DIN HC3 RELAYRelay Socket DIN Rail | Panasonic Electric Works |
| 5 | SP2-DC12V | RELAY GEN PURPOSE DPDT 15A 12VGeneral Purpose Relay DPDT (2 Form C) 12VDC Coil Socketable | Panasonic Electric Works |
| 6 | ALZ11B12W | RELAY GEN PURPOSE SPDT 16A 12VGeneral Purpose Relay SPDT (1 Form C) 12VDC Coil Through Hole | Panasonic Electric Works |
| 7 | 4-1415899-9 | RELAY GEN PURPRelay Coil | TE Connectivity Potter & Brumfield Relays |
| 8 | 70RCK4 | I/O MOUNTING BOARD STANDARD 4POSI/O Module Rack 4 Channel | Grayhill Inc. |
| 9 | P6B-C2 | HOLD DOWN CLIP FOR PCB RELAYClip, Hold Down G6B Series | Omron Electronics Inc-EMC Div |