Model: B5111 Monitor fridge temps with Govee Smart Thermometer R1 Lite, get real-time alerts via app with this smart thermometer for fridge management. Smart 3-Way Alerts & Remote Temperature Monitoring: Get instant app notifications, email alerts, and buzzer alarms when temperatures exceed your preset range, with 24/7 remote monitoring for complete protection. High-Precision Temperature Sensor: Features an ultra-sensitive 2.7mm NTC probe with ±0.9°F/±0.5°C precision, and a 2-second response time for real-time monitoring across a wide -40°F to 158°F (-40°C to 70°C) range. Built-In 80dB Audible Alarm: This freezer thermometer with alarm features a buzzer to provide loud, instant alerts when temperatures go out of range - suitable for families where immediate response is needed. Whole-Home Temperature Management: A single gateway supports up to 10 sensors within a range of up to 200ft (60m), allowing remote thermometer centralized monitoring of multiple fridges/freezers/rooms simultaneously. Quick & Easy Installation: This refrigerator thermometer features a magnetic/hanging design with an included probe holder for neat cable management - set up in just 5 minutes with flexible placement options. False Alarm Prevention: The software optimizes the logic of preventing false alarms, so that the alarm will not be triggered by the refrigerator door being opened for a short time, avoiding disturbances. Ultra-Thin Cable: The cable is only 1.2 mm thick and 2.7 mm wide. It can be placed inside the refrigerator along the door without affecting the closing and sealing of the refrigerator.