General description 20Pcs TCRT5000 Infrared Reflective Sensor Module Line Barrier IR Track Photoelectric Switch is designed for precise detection of reflected infrared light. This module is ideal for applications requiring distance measurement and line tracking. Technical specifications Detection distance: 1mm to 25mm Working voltage: 3.3V to 5V Output format: digital switching output (0 and 1) Material: ABS Color: blue Measurement allowed error: +/- 1-3 cm Package contents 20 x TCRT5000 Sensor Module