Little pricey for these guys, unless you just bounce them around jars. The readings are really spot on after comparing with a few other readers. I like them. Have one in the actual tent, and one for jars. I really like that I can have it send me an alert if shit gets crazy!
Govee Hygrometer Thermometer, Wireless Thermometer, Mini Bluetooth Humidity Sensor with Notification Alert, Data Storage and Export, 262 Feet Connecti https://www.amazon.com/dp/B07R586J37/ref=cm_sw_r_cp_apip_6cTPmWukdbRMN