Name: Wireless Thermometer

features:
1. Maximum/Minimum Recording: The freezing thermometer can record the maximum/minimum temperature and display up, down and parallel arrows to indicate the current temperature trend. Press the "℃/℉" key to switch between Fahrenheit or Celsius.
AUDIO ALERT REMINDERS: Has indoor and outdoor audible alarms. It will sound an audible alarm when the temperature exceeds your preset minimum and maximum alarm settings.
2. 24H record: including 24 hours minimum and maximum temperature records, you can easily monitor the temperature change of the refrigerator, providing double protection for your food safety.
3. Temperature range: indoor -10℃~60℃ (14℉~140℉), outdoor -40℃~60℃ (-40℉~140℉), transmission range is 100M/328ft (open area).
4. Battery Power: The digital thermometer is powered by 2 x AAA batteries (not included). The sensor is powered by 2*AA batteries (not included).
5. There are 6 function keys on the host, and a signal indicator on the transmitter. Just press the appropriate button to turn the alarm on/off, toggle Celsius or Fahrenheit, and clear MAX/MIN records.
notes:
1. Press and hold the INDOOR ALARM or OUTDOOOR ALARM key for 3 seconds to enter the SENSOR temperature alarm setting mode.
2. When flashing, press +/- keys to increase or decrease the value to set the temperature alarm.
3. Finally press OK again to exit. This prevents false alarms due to refrigerator or freezer doors being helped open during normal use.
Packing list:
1 x host
2 x transmitter
1 x user manual
Note:
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. 
Manual measuring,please allow 1~3mm error,thank you.