ตัวรับ ส่ง ข้อมูล ด้วยแสง อินฟาเรดStandards from the Infrared Data Association today permit tens of millions of users to easily beam items between handheld devices. Professionals beam business cards from PDA to cell phone. School children wirelessly exchange games at recess. Shoppers make purchases at grocery stores by pointing a handheld device at point of sale terminal. Today, IR protocols are used in applications like consumer electronics, computers, household appliances, medical devices, automotive technologies & commercial services.