General description This fridge thermometer features a main unit and two wireless sensors, allowing for versatile use in different areas of the refrigerator as well as for indoor and outdoor temperature monitoring. The main unit displays both the room temperature and the temperatures monitored by the sensors simultaneously, providing a comprehensive overview of your environment. Technical specifications Temperature range: indoor (-10℃~60℃/14℉~140℉), outdoor (-40℃~60℃/-40℉~140℉) Accuracy: ±1℃/±2℉ Transmission range: 100 meters (open area) Usage Sound alarm function for temperature alerts Manual setting of maximum and minimum alarm values Audible alarm activates when temperature reaches preset limits Max/min record provides temperature history for the past 24 hours 6 function buttons for easy operation Temperature unit conversion between °C and °F Installation Easy installation with built-in magnet, hanging hole, and bracket on the back of the main unit Two sensors come with a clip and