Based on this product's specifications, here are some alternatives and similar models
Mounting magnet set for smoke and carbon monoxide detectors Alecto SMK10
Summary description:
Magnet mounting set by Alecto (model SMK10) designed for attaching smoke and carbon monoxide detectors without drilling. The kit provides magnetic mounting hardware that enables easy installation, removal and repositioning of compatible detectors, simplifying maintenance and battery replacement. Suitable for homes and rental units where non-invasive mounting is preferred.