Based on this product's specifications, here are some alternatives and similar models
Microwave Motion Sensor MACLEAN MCE137 — recessed design, model 41933
Summary description:
MACLEAN MCE137 is a microwave motion sensor designed for recessed installation. The device detects movement using microwave technology and is intended for presence detection and automatic control of lighting or security systems. Supplied as model 41933 (EAN 5902211102212), it is suitable for indoor mounting in ceilings or fixtures where discreet, flush installation is required.