Trac10290 High Temperature BLE Sensor is an IPx7 waterproof beacon with a wide range of temperature probe. It supports Bluetooth® Low Energy( BLE) in Bluetooth 5 and measures the temperature from -100°C to +250°C. It works with beacon gateway to monitor the temperature inside a refrigerator or freezer through a 2 or 5 meters probe. The typical battery life in default settings is over 3 years. There is also a food grade version of Trac10290 High Temperature BLE Sensor which can work with the food.