Temperature gun says e1 is a broken circuit board for the electronic thermometer.
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It means standby.
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The temperature gun consists of a temperature sensor, liquid crystal display, button battery, application-specific integrated circuit and other electronic components. It can measure human body temperature quickly and accurately. Compared with traditional mercury glass thermometer, it has convenient reading and short measuring time.
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High measurement accuracy, can remember and have the advantages of buzzing prompts, especially the electronic thermometer is not mercury, harmless to the human body and the surrounding environment, especially suitable for family, hospital and other occasions.
error of measurement
The infrared thermometer shows the letter E after measurement, mostly because the measured body temperature is outside the possible body temperature range, usually caused by measurement errors, such as wrong distance, no alignment, and so on.
Point the infrared detector part at the center of the front forehead - above the brow and keep it vertical. The measuring part should not be covered by hair, and should be dried if there is sweat. The distance from the forehead is recommended to be about 3-5cm. The screen displays the temperature indicator, records the value, and the temperature measurement ends.
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There are four ranges A,B,C,D and E in the eight-grid E-level temperature bar, where E is represented by two measuring ranges of Fahrenheit and Celsius: °C (C) 204 210 216 224 232 241 249 254 260°C °F (F) 399 410 421 435 450 466 480 489