The latest member of the Ring family of smart home devices, the Ring Mailbox Sensor ($49.99 with the required bridge) is a wireless motion sensor that lets you know when your mailbox has been opened.

Put your smart home plans into motion.

Aqara makes the best smart sensors, hands down, and almost all of them, including hubs, are on deep discount right now. Amanda Blum is a freelancer who writes about smart home technology, gardening, ...