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Detect Nearby Objects Without Contact
The Reflectance Sensor Array QTR-MD-05RC 5-Channel 8mm Pitch RC Output is an optical interrupter sensor with digital output designed for obstacle detection, touchless triggers, object counting, and simple automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Operating voltage: 2.9 V to 5.5 V.
Why you’ll love it
- Useful spec: QTR
- Controller output: digital I/O-compatible signals that can be read in parallel as timed high pulses
- Power range: 2.9 V to 5.5 V
- Current draw: 30 mA (independent of supply voltage)
- Compact size: 37.0 × 20.0 × 2.5 mm (see the dimension diagram (1MB pdf) for more details)
- Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| Reflectance Sensor Array QTR-MD-05RC 5-Channel 8mm Pitch RC Output | optical interrupter sensor with digital output | Current item |
| Reflectance Sensor Array QTR-MD-08RC 8-Channel 8mm Pitch RC Output | optical interrupter sensor with digital output | model QTR-MD-08RC |
| Reflectance Sensor Array QTR-MD-04RC 4-Channel 8mm Pitch RC Output | optical interrupter sensor with digital output | model QTR-MD-04RC |
| Distance Sensor 5cm GP2Y0D805Z0F Carrier Sharp | infrared distance sensor | motion sensing |
What you can build
This sensor is a good fit for robot obstacle avoidance, touchless dispensers, automatic doors, object counters, parking aids, and level alarms.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include a microcontroller board, jumper wires, and pull-up or pull-down support when needed, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | Reflectance Sensor Array QTR-MD-05RC 5-Channel 8mm Pitch RC Output |
|---|---|
| Sensor type | QTR |
| Sensor count | 5 |
| Sensor pitch | 8 mm |
| Output format | digital I/O-compatible signals that can be read in parallel as timed high pulses |
| Operating voltage | 2.9 V to 5.5 V |
| Full-brightness LED current | 30 mA (independent of supply voltage) |
| Max board current | 93 mA |
| Dimensions | 37.0 × 20.0 × 2.5 mm (see the dimension diagram (1MB pdf) for more details) |
Wiring & usage notes
Connect power and ground, then wire the output pin to a digital GPIO input. Check whether the module uses active-high or active-low logic in your code.
What’s in the box
1 × Reflectance Sensor Array QTR-MD-05RC 5-Channel 8mm Pitch RC Output
Frequently Asked Questions
What does the Reflectance Sensor Array QTR-MD-05RC 5-Channel 8mm Pitch RC Output measure?
It is designed to measure light, reflection, or beam interruption.
Can I use it with Arduino, ESP32, or Raspberry Pi?
Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this Digital GPIO sensor?
This sensor provides a digital switching-style signal that is easy to read from a GPIO pin.
Does it need calibration?
Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.
Is it good for prototyping?
Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
Compatibility & downloads
// downloads
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