Based on this product's specifications, here are some alternatives and similar models
People counter sensor Milesight VS350-868M — wireless IoT visitor counting device (868 MHz)
Summary description:
Milesight VS350-868M is a people counter sensor designed for wireless IoT deployment at 868 MHz. It accurately detects and counts visitors for retail, facility management and occupancy monitoring. The compact sensor transmits occupancy data to compatible IoT gateways or platforms, enabling traffic analysis, space optimization and reporting for operational decisions.