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 - Usage temperature: Temperature: -10 degree Celsius ~ + 50 degree Celsius; Humidity: 5% ~ 80% - Accuracy: +-1degree Celsius - Distinguish: 0.1 degree Celsius - Power: two button battery (LR44, 1.5V) included 7. Size: 48x29x15mm 8. Instruction: - Open the battery cover to put in two LR44 batteries correctly, pay attention to the polarity. - Display once put in the batteries. Please take out the batteries when not use for long time (Notes: First use please take out the dielectric) - LCD display H degree Celsius when temperature is higher than 70 degree Celsius; LCD display L degree Celsius when temperature is lower than a?? 50 degree Celsius.