A nice touch is that DC 12V power keeps noise quiet environments.
1- TRANE RL Y01133 Relay SPDT 50/60 HZ 10 Amps 240 Volt Contacts NEW OLD STOCK
What stands out about this relay is the QUALITY brand, and it matches the solid feel of the casing.
A nice touch here is the Features entry reading N/A, which means no extra fluff to consider.