Received this temperature and humidity control unit while on vacation at Disneyland. This unit works very well and is within 1-2 degrees of true temperature compared to my very expensive data center sensor phone and industrial AC unit. I can track steps, set up notification traps, etc. No problem getting readings from hundreds of miles away. I've bought a few other devices before and they all assume they are wireless but only transmit data when using Bluetooth and within range. This is not the case with this device. Bluetooth is only used when pairing a device, connecting to WiFi and then exporting the data via CSV. I am currently monitoring my unit which is in a grow tent in Illinois while I go to Florida for a week. I would highly recommend this device to anyone who wants to monitor temperature and relative humidity very closely while away from home.
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