I am looking for a thermal sensor with a distance of 10 meters . In my plan , I would like to recognize objects based on the heat. for example car.
How about this one at £20?
The range depends on what lens you put in front of it - this has to be plastic as IR doesn't penetrate glass, but you can set your own range, like a focus adjustment. Commercial IR remote thermometers generally have aiming dots (laser) so you can see the optimum range - there's a fixed lens.
The actual sensor won't have a defined range, because of this.