Based on this product's specifications, here are some alternatives and similar models
Flush-surface motion detector Aritech DC105 — combination dual-technology (PIR + microwave) recessed mounting
Summary description:
Aritech DC105 is a flush-surface combination motion detector using dual technology (passive infrared PIR plus microwave) for reliable presence and movement detection. Designed for recessed mounting, it reduces false alarms by requiring both sensors to trigger. Suitable for indoor security and automation in homes, offices and commercial spaces where discreet, accurate motion sensing is needed.