Based on this product's specifications, here are some alternatives and similar models
Loop detector nice LP21 single-channel loop detector (model 28130)
Summary description:
Single-channel loop detector nice LP21 (model 28130) is an inductive vehicle detector designed to monitor metal objects passing over a loop wire. It provides single-channel detection for gate, barrier or access control systems, enabling vehicle presence sensing and triggering control outputs. Typical use cases include automated gates, parking barriers and traffic sensing where reliable loop-based detection is required.