Function and features:
●Display Indoor and outdoor temperature simultaneously
●Switch between ℃/F
●Max./Min. temperature value memory
●Max./Min. temperature value recovery function

Technical parameters:
●Measuring range: Indoor temperature -30℃～+50℃(-22F～122F)
Outdoor temperature -50℃～70℃(-58F～158F)
●Resolution:0.1℃
●Power supply: one 7# Alkaline battery

Instruction:
●Display current temperature value when install the battery.
●Min Key: press it then display the Min. memory value
●Max key: press it then display the Max. memory value
●Reset key: under Min/Max. modes, press "Reset" then the former memory value returns to the current value.
●℃/F: under ℃ mode to display Celsius; under F mode to display Fahrenheit