3 in 1 Non‐Contact Infrared
Forehead Thermometer , NCT‐301
Q1: Where do you position to the thermometer to measure body temperature?
The default position of this thermometer is 1.2 to 2 inches from the center of the forehead for
measuring body temperature.
Q2: Why does the readings vary with several measurements?
Tips for proper readings:
Make sure the sensor lens is 1.2 to 2 inches from the center of the forehead
There is no hair occlusion or sweat on this part of forehead
Ensure no wind blowing through the thermometer and the forehead. Accuracy of the measurement is
guaranteed if used correctly.
Q3: Can I measure body temperature from another part of the body?
It is not recommended, but this model of thermometer does provide the option to measure from
body parts other than the forehead if there is no hair occlusion on this spot. However, you should use
the recalibrate operation before you change the measured part. There is detailed description in the
User Manual on how to make recalibration (F4 function). Make sure you fully understand the
operation steps before trying.
Q4: I got measurement readings quite consistent very time, but it seems around 0.5F
lower than the readings from a conventional thermometer. Is it the quality problem?
How do I perform a recalibration?
No. It is understandable that the non‐contact thermometer measures the surface temperature of the
forehead, and the forehead temperature is not the same as body temperature. Therefore the
manufacturer makes a compensation for the difference with a value generated from statistics basing
on the normal average people, then we can get the body temperature value directly from the reading.
However, that does not rule out the possibility of minor compensation differences for very small
