ORIA Wireless Refrigerator Thermometer with 2 Sensors & Alarm, Black | Indoor/Outdoor -40°C to 60°C

• Note: After the temperature alarm is turned on, the alarm function will not be activated until 10 minutes later (when it is just turned on, no matter whether the temperature reaches the alarm temperature range at this time, it will not alarm).
• Alarm Alert: The wireless refrigerator temperature with audible alarm, you can set the maximum and minimum alarm value manually. It can ring when the temperature value reaches at the point of limit max or min alarm value that you pre-set. Note: The product do not have the function to remember all the history Max/Min temperature data. Only show the data within 24h.
• Transmission Range: The indoor/outdoor thermometer range; Indoor: -10℃ - 60℃ (14℉ - 140℉); Outdoor: -40℃ - 60℃ (-40℉ - 140℉); Transmission range: 100M/328ft (open area). It can record max and min temperature and display up, down & parallel arrow to indicate the trend of current temperature.
• 2 Wireless Sensors: With 2 remote sensors, the wireless fridge thermometer can display indoor temperature and 2 groups of outdoor temperature simultaneously. You can put the sensor in the refrigerator or outdoor.
• 6 Button Use: There are 6 function keys on the main unit and signal indicator on the transmitter, you just press the corresponding key to turn on/off the alarm, switch the Celsius or Fahrenheit and clear the MAX/MIN records.

• Insert 2 AAA batteries (not included) into the main unit and each of the two wireless sensors. Ensure correct polarity. The main unit and sensors will then power on. — Install Batteries
• Position the sensors inside your refrigerator, freezer, or other desired locations. Place the main unit within 100 meters (328 ft) of the sensors in an open area for optimal wireless signal reception. — Place Sensors and Unit
• Press the function keys to set desired maximum and minimum temperature alarm values. The unit will begin monitoring and will sound an audible alarm 10 minutes after activation if temperatures go outside your set range. — Set Alarms and Monitor
• Press the 'Clear MAX/MIN' button to reset the recorded temperature data. Wipe the main unit and sensors clean with a damp cloth as needed. Change batteries when the display becomes blurry. — Clear Records and Maintain

Typical situations where ORIA Wireless Refrigerator Thermometer with 2 Sensors & Alarm helps — illustrative scenarios, not customer reviews.