Review on 🌡️ Extech RHT3 EzSmart Hygro-Thermometer: Advanced Monitoring and Data Analysis for Optimal Conditions by Minas Chase

That is exactly what is said. Download the app for your Android (which I tested it on) or iPhone and connect the device to the headphone jack and you can view and log real-time temperature and humidity. The software (simple but not as intuitive as it could be) allows you to create several different locations and you can save a reading list for each of those locations. If your job requires careful monitoring and an understanding of temperature and humidity in different areas - or if you're interested in tracking that information for health reasons, this is a great little device. A few things to note: * This is the size and shape of the USB memory stick. The cover snaps over the headphone jack. Very small and easy to take with you*. To my knowledge, the device only receives power and takes readings when connected to a mobile device. So you can't leave it somewhere for a day and then see what the reading was while you were away - you have to be physically present and press the button to take the reading on your phone.