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Measure Light and Optical Changes with a Compact Sensor
The Phototransistor PT334 6C 5MM 5PCS is a ph sensor with digital output designed for light logging, optical switching, line tracking, and brightness-aware projects. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Interface: Digital GPIO.
Important: Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.
Why you’ll love it
- Fast response: Fast response
- High photo sensitivity: High photo sensitivity
- Easy wiring: Digital GPIO
- Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
- Common controller support: Works well with Arduino, ESP32, Raspberry Pi, and similar boards
- Project-ready sensing: light logging, optical switching, line tracking, and brightness-aware projects
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| Phototransistor PT334 6C 5MM 5PCS | pH sensor with digital output | Current item |
| Photocell mini photo-resistor | pH sensor | general-purpose sensing |
| Reflective Optical Sensor with Transistor Output CNY70 | optical interrupter sensor | infrared sensing, temperature sensing |
| QTR-1A Reflectance Sensor 2-Pack | optical interrupter sensor with analog output | analog output, infrared sensing |
What you can build
This sensor is a good fit for automatic brightness control, line followers, light meters, UV monitors, flame detection, and optical encoders.
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 | Phototransistor PT334 6C 5MM 5PCS |
|---|---|
| Interface | Digital GPIO |
| Category | optical light imaging photon sensors |
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. Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.
What’s in the box
1 × Phototransistor PT334 6C 5MM 5PCS
Frequently Asked Questions
What does the Phototransistor PT334 6C 5MM 5PCS measure?
It is designed to measure light, color, or optical changes.
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.
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