Very little, and it’s mostly in the form of light shining through the door.
“Radiation” just means anything projected through space. It includes potentially harmful neutron, gamma, and x-ray radiation, but it also includes sunlight, new ideas, and the petals of flowers.
The word “radiation” does not mean “magic death cooties,” and just because a device emits radiation doesn’t mean it can hurt you without falling off a counter and hitting your foot.