• Capacitive Proximity Sensor LJC18A3-H-Z / BY - circuitrocks
  • Capacitive Proximity Sensor LJC18A3-H-Z / BY - circuitrocks
  • Capacitive Proximity Sensor LJC18A3-H-Z / BY - circuitrocks
  • Capacitive Proximity Sensor LJC18A3-H-Z / BY - circuitrocks
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Detect Nearby Objects Without Contact

The Capacitive Proximity Sensor LJC18A3-H-Z / BY is a proximity presence sensor module 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 Detection Range: +- 10 mm; Wide Range of Materials: Detects metal, plastic, glass, water, oil, and other non-metallic objects.; Operating voltage: DC 6 to 36V.

Why you’ll love it

  • Controller output: Provides a fast, reliable signal when an object is detected.
  • Sensing range: +- 10 mm
  • Power range: DC 6 to 36V
  • Operating frequency: 100 Hz
  • Sensor size: 18mm
  • Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics

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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 Capacitive Proximity Sensor LJC18A3-H-Z / BY
Specifications Model LJC18A3-H-Z / BY
PNP NO Output Provides a fast, reliable signal when an object is detected.
Output Type PNP
Detection Range +- 10 mm
Wide Range of Materials Detects metal, plastic, glass, water, oil, and other non-metallic objects.
Operating voltage DC 6 to 36V
Response Frequency 100 Hz
Tip diameter 18mm

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 × Capacitive Proximity Sensor LJC18A3-H-Z / BY

Frequently Asked Questions

What does the Capacitive Proximity Sensor LJC18A3-H-Z / BY measure? It is designed to measure nearby objects, remote IR signals, or motion.
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.
What affects accuracy? Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

Capacitive Proximity Sensor LJC18A3-H-Z / BY

Capacitive Proximity Sensor LJC18A3-H-Z / BY

65 in stock

Product Code

2389

₱ 380.00
₱ 380.00
Sale Sold out
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