Amazon is currently offering the Govee Wireless Thermometer Hygrometer for just $11.89 plus free shipping for Prime members. Usually priced at $20, this is the best deal we've seen on a temperature monitoring device that can connect via Bluetooth. 

The Govee Wireless Thermometer Hygrometer is a fantastic compact device with Bluetooth capabilities, allowing it to connect from a distance of up to 328 feet. This versatile gadget is designed to track temperature and humidity levels in various spaces. Whether you need to monitor your home, wine cellar, cigar storage, a baby's room, a greenhouse, or any other environment, this device will provide you with real-time information about the conditions that matter most to you, both inside and around your home.

• Mini Bluetooth humidity and temperature sensor 
• Data Export for iOS and Android
• Includes alerts for things such as your house, wine cellar, cigar storage, your living room, and more
• 20 days of in-app storage