YES. iHealth PT3 is not harmful to children or adults, it only measures infrared light, it doesn’t produce infrared.
Keep the thermometer out of the reach of children. For accidental swallowing of the battery or other components, please contact emergency services immediately.
*credit to Sylvain of iHealth Labs EU
https://helpcenter.ihealthlabs.eu/hc/en-gb/articles/360007255698-iHealth-PT3-Is-it-safe-to-measure-kid-s-body-temperature-