Hi neighbors! The Mailbox Sensor connects using the Smart Lighting Bridge. For those who already own Ring Smart Lighting products, you are able to test distance between the Bridge and your mailbox using a Smart Light as a test.
The Smart Lighting Bridge will communicate with your Mailbox sensor via a low power radio frequency that is designed to reach much further than wifi. The reach of this signal can depend on Bridge placement and environmental variables. For more information on the Mailbox Sensor, check out our help center article as well as the Mailbox Sensor product page on Ring.com. I hope this helps!