| # | Part Number | Description | Manufacturer |
|---|---|---|---|
| 1 | RFD22131 | RFDUINO RELAY SHIELD | RF Digital Corporation |
| 2 | TX2-L2-3V | RELAY TELECOM DPDT 2A 3VTelecom Relay DPDT (2 Form C) Through Hole | Panasonic Electric Works |
| 3 | D3009 | RELAY TELECOM DPDT 2A 5VTelecom Relay DPDT (2 Form C) Through Hole | TE Connectivity Potter & Brumfield Relays |
| 4 | JRE400211 | QUICK MOUNT, 4 POLE WCRelay | Amphenol Pcd |
| 5 | 2271031 | PLUG-IN BASE STD I/O MOD W/SAFERelay Socket Through Hole | Phoenix Contact |
| 6 | SFS4-SFD-R | TERMINAL SKT SPADE & RING 4POLERelay Socket DIN Rail | Panasonic Electric Works |
| 7 | SM2S-05C | SOCKET DIN MOUNT FINGERSAFERelay Socket DIN Rail | IDEC |
| 8 | 927076-1 | 5P POS-LOCK BU GEHRelay | TE Connectivity AMP Connectors |
| 9 | SR101A01 | RELAY SAFETY DPST 4A 24VSafety Relay DPST-NO (2 Form A) 24VAC/DC Coil DIN Rail | Omron Automation and Safety |