Okay, so you know how when you have a fever, mom or dad puts a thermometer in your mouth, ear or armpit to check how hot your body is? Well, a Fouru thermometer is just like that, but it's a special kind that can take your temperature without touching your skin!
You might be wondering how it can work without touching you - it uses something called infrared technology. You know how sometimes you can feel the heat coming from a hot stove or a light bulb? Well, that heat is actually a kind of light that you can't see. Infrared technology is like a special camera that can see this kind of light, even though our eyes can't.
To use a Fouru thermometer, an adult will point it at your forehead from about 1-2 inches away. The thermometer will use its special camera to detect the infrared light coming from your skin, and use that to calculate your temperature. It's really quick and easy, and you don't have to be scared of the thermometer touching you in any way.
Since the Fouru thermometer doesn't touch you, it's also really easy to use on lots of people without having to clean it in between (like you would with a regular thermometer). This makes it a good choice for places like schools, doctor's offices, or anywhere else where lots of people might need their temperature checked.
So there you have it, a Fouru thermometer is a special tool that can take your temperature without touching you, using infrared technology to detect the heat coming from your skin!