Product: Inkbird Wireless Thermometer Humidity and Temperature Monitor, IBS-TH2 Freezer Thermometer Bluetooth Temperature Sensor Smart, with APP for Android and iOS ( Temperature and Humidity Sensor )
Brand: Inkbird
Specifications 
 
Brand: INKBIRD
 Model: IBS-TH2
 Bluetooth Connection Range: 30 meters (98ft) 
 Temperature Measurement Range: -40℃~60℃/-40℉~140℉ 
 Temperature Accuracy  
 - Typical: ±0.3℃/+0.5℉ 
 - Max: ±0.5℃/±0.9℉  
 Humidity Range: 0%RH-99%RH 
 Humidity Accuracy (25℃/77℉, 20%~80%RH)  
 - Typical: ±3%RH  
 - Max: ±4.5%RH  
 RH Humidity Accuracy(25℃/77℉, 0%~100%RH)  
 - Typical: ±4.5%RH 
 - Max: ±7.5%RH 
 Battery:  AAA Battery*2 (not included) 
 Waterproof Level: IPX4 
 Magnetic Back:  Yes 

🌡Built-in temperature & humidity sensor, stores max 30,000 points of data on the device. Temperature sensor -40℉~140℉ and humidity sensor 0%RH-99%RH
🌡Graph, accuracy calibrating, high/low-temperature alarm notification, data export, and the sampling interval set are supported via app
🌡Up to 98ft(without obstacle) remote control via Bluetooth.Please note that IBS-TH2 is not compatible with the gateway (IBS-M1)
🌡Waterproof IPX4 makes this thermometer/hygrometer ideal for a freezer or refrigerator. Built-in magnet, this sensor could be attached to the metal without glue or nails
🌡Smart thermometer / hygrometer supports connected to multiple phones and reading multiple sensors with one cellphone

Search query: freezer remote temperature monitor
Relevance: Exact