Temperature and Humidity Smart Sensor: inkbird ibs-th1 plus
It’s BT(Bluetooth) enable without gateway. Temperature Range: -40-140 Fahrenheit /-40-60 Celsius (Inner Sensor), -40-212 Fahrenheit /-40-100 Celsius (External Probe). Humidity Range: 0-99 %RH. 【Probe & Mode】 Inside and external probe are supplied.