This is an excellent outdoor dual passive infrared detection voice prompter with solar charging technology. Using two side-by-side passive infrared window design, detection coverage Angle up to 170°, wide detection range, less detection dead Angle, completely sealed plastic structure design, can avoid sunlight, rain, dust, insects, typhoons and other common outdoor interference factors that are not conducive to the installation of passive infrared detectors It can be applied to outdoor green ways, forest , construction sites, high-voltageline towers, mixed intersections, warehouses, oil depots, docks and other places that need voice prompts.