Review on 🌡️ 9H Wireless Thermometer Hygrometer: Smart Bluetooth Sensor with Alarm & Data Storage for iPhone/Android by Warrick Infinite

Recommendation to replace the Boveda Butler, as finicky as the Butler (and heavy sized among other things) it at least works with some finesse and patience. This hygrometer was easy to set up, but it never synced properly and never had accurate temperature or humidity readings. To make matters worse, it couldn't even come close to being calibrated as the parameters were too narrow. Save your money, most of these Bluetooth devices are junk. Just buy the Cigar Oasis Caliber IV digital hygrometer.