People counters: Wireless, for retail, battery powered, electronic, door, IR beam sensors
TC-6 Pro-Count People Counter - Total Count
Visitor Counter Bi-Directional | Customer Counter with Display | Completely Wireless and Battery Operated | Person Counter with Infrared | To Count Your Visitors : Amazon.de: Business, Industry & Science
Retail People Counter, People Counting Equipment/Device/Sensor Manufacturer | Ontime