| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | MA-MT-VCS1CL | VOICE CALL SWITCH W/ 1M CABLE | Digi International |
| 2 | TXS2SA-L2-4.5V-X | RELAY GEN PURPOSE DPDT 1A 4.5VGeneral Purpose Relay DPDT (2 Form C) Surface Mount | Panasonic Electric Works |
| 3 | 2950718 | RELAY GEN PURPOSERelay | Phoenix Contact |
| 4 | 2900458 | TERM BLOCKRelay | Phoenix Contact |
| 5 | 1860000-1 | SOCKET RELAY 4P DIN SCREWLESSRelay Socket DIN Rail | TE Connectivity Potter & Brumfield Relays |
| 6 | JTN1S-PA-F-DC15V | RELAY GEN PURPOSE SPDT 20A 15VGeneral Purpose Relay SPDT (1 Form C) 15VDC Coil Through Hole | Panasonic Electric Works |
| 7 | 70RCK4R | I/O MOUNTING BOARD STANDARD 4POSI/O Module Rack 4 Channel | Grayhill Inc. |
| 8 | ARS10Y4HX | RELAY RF SPDT 500MA 4.5V | Panasonic Electric Works |
| 9 | 70M-IDC15 | INPUT MODULE DC 18MA 15VDCDC Input Module Output Module 10mA 15VDC Output 3 ~ 32VDC Supply | Grayhill Inc. |