Why is smoke detectors made out of polystyrene?

Smoke detectors are often made from polystyrene because it is a lightweight, durable, and cost-effective material. Polystyrene has good insulating properties, which helps protect sensitive electronic components inside the detector from heat and environmental factors. Additionally, its ease of molding allows for the production of complex shapes necessary for effective sound projection and smoke detection. Overall, polystyrene contributes to the reliability and efficiency of smoke detectors.