What common household item can emit low levels of radiation?

Smoke detectors are equipped with a small amount of radioactive material, typically americium-241, which is used in ionization smoke detectors. This radioactive isotope emits alpha particles, allowing the detector to sense smoke particles effectively. When smoke enters the detector, it disrupts the flow of ions, triggering the alarm. The radiation emitted from smoke detectors is at a very low level and is considered safe for household use.

In contrast, while other household items such as refrigerators, washing machines, and televisions may contribute to electromagnetic fields, they do not typically contain radioactive materials or emit radiation in the same manner as smoke detectors. Hence, smoke detectors are the clear answer when it comes to common household items that emit low levels of radiation.