1. Visual inspection. Electronic thermometers are generally small and beautiful, with a smooth surface and no defects.
2. Power-on inspection. Put the switch button in the on position, check whether the display mark is consistent with the instruction manual, disconnect the power supply and connect it again, and observe whether the correct mark is also displayed.
If after several power on-off tests, the correct markings are displayed the same, and the displayed armpit temperatures are basically the same, it means that the repeatability of the electronic thermometer is good. If the display is abnormal (the temperature difference is too large), the battery of the electronic thermometer is exhausted, or there is a poor contact somewhere.
3. Accuracy check. Press the switch button, the "188.8" mark appears on the LCD. Put the thermometer under the tongue for 1 minute, when the "C" mark stops flashing and there is a beep sound, the displayed reading is the body temperature, which is the oral body temperature.
Repeat the measurement several times, the oral body temperature should be the same, if it is not the same, the repeatability of the table is not good, it cannot be selected, and there is no need to do an accuracy check.
If the oral body temperature is exactly the same, you can take the armpit temperature measurement. When the "C" mark stops flashing and there is a beep sound, the displayed reading is the armpit temperature. Similarly, test several times, and the underarm body temperature value is the same.
Generally, the oral temperature is about 1 degree higher than the armpit temperature. If the oral temperature tested is too much or too little higher than the armpit temperature, the accuracy of the electronic thermometer can be considered unsatisfactory.
4. If the electronic thermometer is placed under the tongue for 1 minute, and the "C" mark continues to flash, you need to cut off the power of the electronic thermometer for 5 minutes, then turn it on again, and take the measurement again. Under normal circumstances, after taking the body temperature from the mouth, the display will no longer flash. If it still flashes intermittently, there must be something wrong with the watch and cannot be used.
5. Whether it is produced by a regular manufacturer, standard second-class medical equipment, whether there is after-sales service, whether there is a telephone address, and other packaging information, you can also check the official website of the relevant company.
