Satisfaction Guarantee: We support 24H online service and ONE YEAR warranty for free replacement or full refund, if you are not satisfied with the product, please contact me, we will try our best to assist you to make satisfaction. Worry-free Guarantee! Easy-to-reach support. Cable length: 100cm; Power: 2 × 1.5v AG13/LR44 button cell batteries (included). Use Condition: Temperature measurement range: -50 ° C ~ 110 ° C; Working temperature: 0 ° C ~ 50 ° C; Storage temperature: -10 ° C ~ 60 ° C.Temperature measurement accuracy: ±1°C. Wide Application: Suitable for refrigerated cabinets, display counters and other needs of temperature measurement including Measuring the temperature inside and outside the car; Measuring the temperature inside and outside the air-conditioned room, inside and outside the refrigerator; Measuring body temperature; Measuring the water temperature of the fish pond; Measuring the water temperature of a baby shower. Simple Design & Easy Operation: Modeling simple, elegant, LCD display, moisture-resistant, strong anti-interference.