קיווי עצמי באמת ir led distance קינוח מוכן בוגר תואר ראשון
IR Illuminator, 12-Led High Power Wide Angle Long Range IR Infrared Light, 850nm IR Flood Lights for Night Vision CCTV and IP Camera with Power Adapter - Walmart.com
infrared - Increasing distance of IR remote / transmitter - Arduino Stack Exchange
infrared - Distance of IR radiation - Electrical Engineering Stack Exchange