What stands out about this relay is the Model 700-P400A1 designation, which helps avoid ordering mistakes.
Kuhnke Relay 24V AC Z345 UF3C With Socket 5-Pole Transparent Plug-In Relay
The TYCO brand is a nice touch on a solid relay, and it helps you feel good about choosing it.
This set gives you 2pcs - 4pin relays, which makes a backup plan simple and affordable.