<b>Specifications </b><br> <br><b>Brand: </b>INKBIRD<br> <b>Model:</b> IBS-TH2<br> <b>Bluetooth Connection Range: </b>30 meters (98ft) <br> <b>Temperature Measurement Range:</b> -40℃~60℃/-40℉~140℉ <br> <b>Temperature Accuracy </b> <br> - Typical: ±0.3℃/+0.5℉</b> <br> - Max: ±0.5℃/±0.9℉ </b> <br> <b>Humidity Range:</b> 0%RH-99%RH <br> <b>Humidity Accuracy (25℃/77℉, 20%~80%RH) </b> <br> - Typical: ±3%RH </b> <br> - Max: ±4.5%RH </b> <br> <b>RH Humidity Accuracy(25℃/77℉, 0%~100%RH) </b> <br> - Typical: ±4.5%RH <br> - Max: ±7.5%RH <br> <b>Battery: </b> AAA Battery*2 (not included) <br> <b>Waterproof Level: </b>IPX4 <br> <b>Magnetic Back: </b> Yes <br>