QRD1114 Reflective Object Sensor

Integrated Infrared Emitter & Detector: Combines a 940 nm infrared emitting diode and an NPN silicon phototransistor side-by-side in a compact black plastic housing.

Focused Daylight Filtered Optics: Features built-in daylight filtering to minimize ambient visible light interference and enhance infrared reflection sensing accuracy.

Non-Contact Proximity Sensing: Detects nearby reflective surfaces and contrast boundaries without physical contact, making it ideal for line-following robots and edge detection.

Compact PCB Through-Hole Design: Standard 4-pin leaded package allows easy mounting on custom printed circuit boards, breadboards, or sensor brackets.

Fast Microsecond Response Time: Offers rapid switching speeds to accurately read encoder disks, count surface marks, and track high-speed rotational movement.

Housing Material: Black molded plastic enclosure with clear optical lenses and tin-plated copper leads.

Technical Specifications:

Peak Emission Wavelength: 940 nm.

Sensing Distance / Focal Range: approx 0.5 mm} - 5.0 mm (0.02'' - 0.2'').

Package Type: 4-Pin Through-Hole (THT / DIP).

Color: Black Plastic Enclosure with Silver Terminal Leads.

Usage Advice: Connect the IR LED through a current-limiting resistor and wire the phototransistor with a pull-up resistor to output digital/analog signal levels; position within $5\text{ mm}$ of the target surface.

Maintenance: Keep the optical lenses free from dust, oil, and solder flux residue; wipe gently with a dry microfiber cloth or cotton swab if dirty.

Essential Robotics & Automation Sensor: Position as a foundational sensor component for line-following mobile robots, paper-feed detection, RPM optical counters, and edge-fall avoidance systems.

Highlight Compact Integrated Reflection: Emphasize how integrating the transmitter and receiver into a single pre-aligned unit eliminates the hassle of manually aligning separate IR LEDs and phototransistors.

Recommended Cross-Sell Add-ons: Pair with TCST2103 optoelectronic switch photo interrupter, PT334-6C Infrared Receiver Phototransistor 5MM, Photo transistor 3DU33, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Light Sensor Module collection page as your standard reflective IR object sensor.