IR Obstacle Sensor Specifications

General

• Sensor Type: Infrared (IR) reflective obstacle detector
• Components: IR LED (transmitter) + Photodiode/Phototransistor (receiver)
• Output Type: Digital HIGH/LOW signal
• Detection Method: Reflected infrared light from nearby objects

Electrical

• Operating Voltage: 3.3 V – 5 V DC
• Current Consumption: ~10–20 mA (varies by module)
• Output Level:
  • HIGH = No obstacle
  • LOW = Obstacle detected (depends on module design)

Performance

• Detection Range: Typically 2 cm – 30 cm (adjustable)
• Sensitivity: Adjustable via onboard potentiometer
• Response Time: <1 ms
• Detection Angle: ~35°

Interface / Pins

• VCC – Power supply
• GND – Ground
• OUT – Digital output signal

Physical

• Module Dimensions: ~48 mm × 14 mm × 10 mm (varies by manufacturer)
• Mounting Holes: Usually 2 holes for easy installation
• Indicator LEDs:
  • Power LED
  • Output/Detection LED

Features

• Adjustable detection distance
• Stable digital output
• Works well for line-following robots, edge detection, and proximity sensing
• Simple 3-wire interface
• Low cost and widely available