5 Pack RPR220 Photoelectric Switch Reflective Optical Coupling Sensor 4 Pin With 1 To 13mm Detection Range Great For DIY Electronics Projects And Precision Sensing

5-Pack Reflective Optical Sensor for DIY Projects
✔️ 5 pcs optical sensor switches, 1-13 mm range, 4-pin

RPR220 is a compact, integration reflection-type photoelectric detector used in automation and DIY electronics. It detects opaque objects within 1-13 mm range and features a GaAs infrared transmitter with a high-sensitivity silicon planar phototransistor receiver. This unit is commonly used in printers, copiers, office automation and small robotics projects.

✅ Detection distance: 1-13 mm (0.04-0.51 in)
✅ Total size: 22.8 mm × 4.9 mm × 6.3 mm (0.90 in × 0.19 in × 0.25 in)
✅ Output: Photo transistor, max 30 mA, DC 30 V
✅ Pins: 4; pin length 16.3 mm (0.64 in)
✅ Transmitter/Receiver: GaAs IR LED; silicon planar triode

💡 What is a reflective optical sensor used for in automation and DIY projects? These handy detectors help you sense nearby objects in tight spaces and feed signals to microcontrollers for basic automation.

• reflective sensor for proximity detection and edge sensing in DIY machines
• short-range sensing with 1-13 mm detection range
• GaAs infrared LED transmitter and silicon phototransistor receiver explained
• easy 4-pin wiring for microcontroller projects