How to use the Function key : 1. SET key 1) Short press the SET key while the thermometer is on, and the key "set" can switch the body temperature and object temperature. 2）Long press the SET key while the thermometer is on, and the key "set" can switch ℃/℉. 2. Memory key 1）Short press the MEMO key while the thermometer is on, and you can read the data of memory group. 2）Long press the MEMO key while the thermometer is on, and you can delete the data of the memory group and it will show CLR M. 3. MODE key 1）Short press the mode key while the thermometer is on, and you can read the data of memory group. 2）Long press the MODE key while the thermometer is on, and you can turn the sound on or off. 4. Measurement key 1) Short press the measurement key and the thermometer is on. 2) While the thermometer is on, short press the measurement key for measuring your body temperature. Parameter Name: Non-Contact infrared thermometer Measuring range: Forehead temperature mode: 32.0 ° C ~ 43.0 ° C (89.6 ° F ~ 109.4 ° F) Object temperature mode: 0.0 ° C ~ 100.0 ° C (32.0 ° F ~ 212.0 ° F) Maximum allowable error: 32.0 ° C ~ 34.9 ° C ± 0.3 ° C 35.0 ° C ~ 42.0 ° C ± 0.2℃ 42.1℃ ~ 42.9℃± 0.3℃ Display resolution: 0.1 ℃; Measuring distance: 1 cm to 5 cm Operating environment: Temperature: 10 ℃ ~ 40 ℃; Relative humidity: ≤80% Power: DC 3V (2 AAA alkaline batteries,Size 7) Dimensions (mm): 138x 95x40 (l x w x h) Automatic shutdown: <30S Emissivity: 1.0 LED tri-color backlight: 1.  Less than 37.4 ℃: green lighting 2.  37.5 ℃ to 38.1 ℃: yellow lighting 3.  More than 38.1 ℃: red lighting
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