MingerDirect (99% positive lifetime feedback) via Amazon offers its Bluetooth Temperature and Humidity Monitor for $16 shipped when you use code AWBCVX3M at checkout. Regularly $40, this is the lowest that we’ve tracked and is the best available. Whether you’re keeping tabs on outdoor temps, your baby’s room, or anywhere else, you’ll be able to monitor it from your phone. Rated 4/5 stars.

Drop the Bluetooth connectivity and get this ThermoPro Indoor Thermometer and Humidity Monitor for $10.50 shipped.

Minger Bluetooth Temperature/Humidity Monitor features:

Swiss-made SHT30 sensing component that provides reliable, accurate measurements. Its measuring range of temperature is -10°C to 60°C /14°F – 140°F with accuracy ±0.3°C . Its measuring range of humidity is 0%-99% with accuracy ±3%. User calibration is available

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Patrick Campanale's favorite gear