1.What are Proximity Sensors?

Proximity sensors are devices that detect the presence of nearby objects without any physical contact. PR sensors emit an electromagnetic field or a beam of electromagnetic radiation and look for changes in the field or return signal.

2.What are Proximity Sensors used for?

These sensors can be used for a wide range of applications. They can be used as parking sensors in cars. Here the sensors are integrated to the bumpers of the cars, and alerts the driver when the car is in close contact with another vehicle. They are used in Ground Proximity Warning systems that are designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. They are also used in measuring vibrations of rotating shafts in machinery. They are also used in roller coasters. This sensor precedes the trim brake in order to identify the current speed of the passing train.

3.What are the types of proximity sensors?

Proximity sensors are classified into five main types: Inductive (detects metals via eddy currents), Capacitive (detects both metal and non-metal objects), Magnetic (detects permanent magnets through walls), Ultrasonic (uses sound waves, detects any material), and Photoelectric/Optical (detects via reflected light). Each type suits specific applications. Choose based on target material, detection distance, and environmental conditions like temperature, humidity, and ambient interference.

4. What types of proximity sensors are available?

Think of this collection as a treasure box of “don’t-touch-me” sensors. You’ll find inductive sensors that spot metal, capacitive ones that sense pretty much anything nearby, IR proximity modules for short-range detection, ultrasonic sensors for echo-based distance measuring, and even magnetic reed switches that react to magnets. Each one has its own way of noticing the world without ever making contact.

5. What is the difference between inductive and capacitive sensors?

Inductive sensors are like metal detectives. They only react when metals step into their invisible field. Capacitive sensors, on the other hand, are more curious and respond to a wider range of materials including plastic, wood, liquid, and even your hand. One is picky and metal-obsessed; the other is a friendly generalist.

6. Can proximity sensors be used in robotics?

Absolutely. Robots love these sensors like bats love sonar. Proximity modules help bots avoid walls, detect objects, follow paths, sense obstacles, and even stop before bumping into furniture. Whether you’re building a line-follower bug-bot or an ambitious warehouse rover, proximity sensing is a core superpower.

7. What is the detection range of these sensors?

Ranges vary by type. Inductive sensors usually work best at a few millimeters, capacitive sensors can stretch a bit farther, IR modules handle short distances, and ultrasonic sensors can measure several meters ahead. The idea is to pick the right nose for the robot, based on how far ahead you want it to “sniff” the world.

8. Are these sensors Arduino and Raspberry Pi compatible?

Yes, most of them play very nicely with Arduino boards, Raspberry Pi, ESP32, and other microcontroller platforms. Many come with simple digital or analog outputs, making them plug-and-program friendly. A little wiring, a quick code snippet, and boom your project starts sensing its surroundings like it has super-awareness.

Distance/Proximity Sensors

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HC-SR-04 Ultrasonic Sensor ( Pack of 25)
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HC-SR04 Ultrasonic Distance Sensor Module (Pack of 20)
HC-SR04 Ultrasonic Distance Sensor Module (Pack of 20) This is a Ultrasonic Distance Sensor Module of 20 Quantity. Ultrasonic Module HC-SR04 Distance Sensor can measure the distance to an object by using echo. It can measure the distance between the sensor and the object by the...

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LJ12A3-4-Z/BX NPN 24V Approach Sensor Inductive Proximity Switch
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Sensor Type	Typical Distance Range	Typical Response Time	Notes
Inductive Proximity	~0.5 mm to ~10 mm (metal only)	Very fast (< 1 ms)	Metal only, contactless detection
Capacitive Proximity	~1 mm to ~50 mm (metal/non-metal)	Very fast (< 2 ms)	Detects liquids/plastics as well
Ultrasonic Sensor	~2 cm to ~400 cm (varies by model)	Moderate (~10–30 ms)	Good for longer range, larger footprint
IR Proximity / Break-beam	~1 cm to ~100 cm (reflective)	Fast (~5–15 ms)	Shorter range, impacted by ambient light

Proximity Sensors	Cost
DC NPN NO 4mm Detection distance proximity detector sensor	Rs.214
TFMiNi micro LIDAR Sensor Module	Rs.4668
Sharp GP2Y0D810Z0F Distance Sensor	Rs.454
E18-D80NK Infrared Sensor Module	Rs.245
LJ18A3-8-Z/BX 8mm Inductive Proximity Sensor	Rs.245
Waterproof Ultrasonic Sensor	Rs.447
HC-SR-04 Ultrasonic Sensor	Rs.63
3 Channel IR Infrared CTRT5000 Line Detection Module	Rs.169
KY033 TCRT5000 Sensor	Rs.51
5 Channel IR Infrared CTRT5000 Line Detection Module	Rs.235

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Applications: Robotics, Industrial Automation & IoT

Technical Comparison: Distance Ranges & Response Times

Sample Projects

Arduino Projects

1. Simple Obstacle Detection Using an IR Proximity Sensor

2. Ultrasonic Distance Measuring Tool

Raspberry Pi Projects

1. Obstacle Avoidance Robot with an Ultrasonic Sensor

2. DIY Distance/Touch Sensor with Electric Paint

Installation & Calibration Guides

Proximity Sensor

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How much do Proximity Sensors Cost?

Proximity Sensors

Cost

Frequently Asked Questions

1.What are Proximity Sensors?

Proximity sensors are devices that detect the presence of nearby objects without any physical contact. PR sensors emit an electromagnetic field or a beam of electromagnetic radiation and look for changes in the field or return signal.

2.What are Proximity Sensors used for?

3.What are the types of proximity sensors?

4. What types of proximity sensors are available?

5. What is the difference between inductive and capacitive sensors?

6. Can proximity sensors be used in robotics?

7. What is the detection range of these sensors?

8. Are these sensors Arduino and Raspberry Pi compatible?

Let customers speak for us

Distance/Proximity Sensors

Categories

Refined By Clear all

Availability

Price

Featured Products

Sort by:

How to Choose the Right Distance Proximity Sensors

All About Distance/Proximity Sensors

Sensor Categories

Applications: Robotics, Industrial Automation & IoT

Technical Comparison: Distance Ranges & Response Times

Sample Projects

Arduino Projects

1. Simple Obstacle Detection Using an IR Proximity Sensor

2. Ultrasonic Distance Measuring Tool

Raspberry Pi Projects

1. Obstacle Avoidance Robot with an Ultrasonic Sensor

2. DIY Distance/Touch Sensor with Electric Paint

Installation & Calibration Guides

Proximity Sensor

Distance Sensor

Buy Distance/ Proximity Sensors Online in India

How much do Proximity Sensors Cost?

Proximity Sensors

Cost

Frequently Asked Questions

1.What are Proximity Sensors?

Proximity sensors are devices that detect the presence of nearby objects without any physical contact. PR sensors emit an electromagnetic field or a beam of electromagnetic radiation and look for changes in the field or return signal.

2.What are Proximity Sensors used for?

3.What are the types of proximity sensors?

4. What types of proximity sensors are available?

5. What is the difference between inductive and capacitive sensors?

6. Can proximity sensors be used in robotics?

7. What is the detection range of these sensors?

8. Are these sensors Arduino and Raspberry Pi compatible?

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