The FLB-H series from Sensor Instruments is a high-sensitivity infrared light curtain sensor designed for detecting extremely small parts, with detection capabilities starting at 0.2 mm (0.008 in). It features a homogeneous IR light distribution, rugged aluminum housing (IP67-rated), and a scratch-resistant optics cover, making it suitable for harsh industrial environments. The FLB-H models support a measuring range from 5 mm to 50 mm and require an external control unit (FLB-CON1 or FLB-CON8) depending on the model size. With a compact profile and oil-resistant PUR cable, they are ideal for part detection in automation, quality control, and counting applications. Common use cases include precise detection of wires, filaments, or other small objects in manufacturing lines.