DC 10-30V NPN NO Inductive Proximity Sensor with 3 Wires, Detection Range 4mm SN04-N NPN

Description

What is the SN04-N NPN? The SN04-N NPN is a three-wire inductive proximity sensor. It detects metallic objects up to a maximum distance of 4mm and emits an NPN signal when a metal object approaches. Features Operating Voltage: 10-30V Output Type: NPN Sensor Type: Inductive Number of Wires: 3 Detection Range: 4mm What is it for? The SN04-N NPN can be used to create automatic switches, presence sensors and control systems. For example, it can be used to turn on a light when a metal object approaches or to detect the presence of an object in a specific location. It is compatible with Arduino and other microcontrollers. Tutorial: How to use DC 10-30V NPN NO Proximity Sensor This inductive sensor is ideal for detecting the arrival and clearance of metallic objects, perfect for automatic control projects and state switches. What do you need? Compatible Arduino or Microcontroller Power supply cable 10-30V 1kΩ resistor Steps 1. Ensure power supply is within 10-30V range. 2. Connect red wire to VCC on the sensor. 3. Connect blue wire to GND on the sensor. 4. Connect black wire to a digital pin on Arduino. 5. Connect a 1kΩ resistor between GND and the output pin of the sensor. 6. Upload code to Arduino. 7. Test the sensor by placing a metal object nearby. 8. Check datasheet for detection range (4mm). Example Code “` int sensorePin = 2; void setup() { pinMode(sensorePin, INPUT); } void loop() { if (digitalRead(sensorePin) == HIGH) { Serial.println(“Object near”); } } “` Mini-project Build an automatic switch for a lamp using this sensor and an Arduino. Common mistakes Power supply out of 10-30V range. Incorrect pin connections to the sensor. Missing pull-down resistor. Detection distance exceeds 4mm. Recommended accessories Arduino Uno LED Lamp 1kΩ Resistor Power Supply Cable 12V Frequently Asked Questions The sensor does not detect metallic objects? Check that the object is metal and within a 4mm detection range. How can I test the sensor? Place a metal object near the sensor and verify that the output pin activates. Can this sensor be used with microcontrollers other than Arduino? Yes, this sensor is compatible with any microcontroller supporting digital signals.