Mini LCD Digital Thermometer for Fridge Freezer, Insert Size 46mm x 26.6mm, Cable Length 1m(Black) 1. LCD Display 2. Insert design 3. Simple appearance 4. Two button batteries for longer use time 5. Especially applied in refrigerator, chiller, deepfreeze etc. 6. Technical parameter: - Temperature range: -50 degree Celsius ~ +70 degree Celsius - Using temperature: Temperature: -5 degree Celsius ~ + 50 degree Celsius; Humidity: 5% ~ 80% - Accuracy: +-1degree Celsius (-30 degree Celsius ~ + 40 degree Celsius) - Resolution: 0.1 degree Celsius - Power: two button battery (LR44, 1.5V) 7. Instruction: - Open the battery cover to put in two LR44 batteries correctly, pay attention to the polarity. - Display when put in the batteries. Please take out the batteries when not use for long time. - LCD display H degree Celsius when temperature is higher than 70 degree Celsius; LCD display L degree Celsius when temperature is lower than -50 degree Celsius. - Insert size: 46mm x 26.6mm - LCD Screen Size: 36mm x 16mm