Check the listing for details. Inkbird Bluetooth Hygrometer Thermometer IBS-TH1, w/ External Temp Probe, New. Condition: New – Open box. Listed at 19.99 USD. Inkbird Bluetooth Hygrometer Thermometer IBS-TH1, w/ External Temp Probe, New. **This is an Open Box Item, that is missing the user guide, but still Brand New** INKBIRD IBS-TH1 is a Bluetooth connection thermometer with a built-in sensor and external temperature probe, high accuracy, data recording, adjustable intervals and magnetic design. It is widely used for most places such as homes, cars, clothes, pets, fruit storage, cigar cabinet and wine cellars. INKBIRD IBS-TH1 can be controlled by Bluetooth connection via its free APP and we can monitor, set and/or adjust its temperature and humidity on our mobile phones at any time, and we can check its history and current data remotely, no time to be wasted for making frequent checking, more efficient and convenient. Its Bluetooth connection range is up to 150ft/50M. Notice: the GPS location service of our mobile phone needs to be turned on before we pair INKBIRD IBS-TH1 with our mobile phone.