Meet the Thermote: an app smart temperature sensor that lets you remotely monitor your home, refrigerator, fish tank, and RV from anywhere. It lasts up to 2 years on battery. It is waterproof and dustproof. The Thermote is compatible with IFTTT.
This smart temperature sensor is compatible with iOS and Android devices. The device has a temperature range of -55C to 125C. The device has WiFi and LoRaWAN connectivity.