BLE Temperature Sensor (Local Alarm)-ST8

110DB Loud Alarm: When the refrigerator or freezer door is opened and the temperature exceeds the set range, this freezer door alarm will immediately send out a loud 110dB alarm to remind you, protecting your food from waste Easy to Use: Quickly connect the bluetooth freezer alarm to the MOCREO Smart App with simple operations! Suitable for freezer door open, cold chain, transport trucks, store beverage refrigerators, home HVAC, hot tubs, swimming pools Remote Monitor: Used with MOCREO H5-Lite BLE Hub, you can remotely monitor your freezer or refrigerator 24/7 in real-time. Receive remote App push notifications & Email alerts, and export two years of historical data(only support 2.4GHz WiFi) Accurate: The temperature range is -40°F to 221°F with an accuracy of ±0.9°F. Simply set the Max/Min temperature range and the refrigerator thermometer will alert you if the freezer fails or the freezer door is opened 2 Year Battery Life and 15% Low Battery Warning: Use replaceable 9V 6LR61 battery (included), with a battery life of up to 2 year. The freezer thermometer door alarm will beeps to alert you when the battery drops to 15%