Miniature Print Relay 5V 12V 24V 2-Switcher 2xUM 5A 250V SMI-05V/12V/24VDC-SL-2C

You will find that this unbranded relay is quiet in operation, with minimal hum or buzz during long runs.

This unbranded relay comes with a clear plastic cover, so dust stays out and you see the internals easily.