{"product_id":"e3f-photoelectric-proximity-sensor-switch-npn-pnp-6-36vdc-2m-5m","title":"E3F Photoelectric Proximity Sensor Switch NPN PNP 6-36VDC","description":"\u003ch2\u003eCKCTINNER E3F Photoelectric Proximity Sensor Switch\u003c\/h2\u003e\n\u003cp\u003eUpgrade your automation or detection setup with the \u003cstrong\u003eCKCTINNER E3F Series Photoelectric Proximity Sensor Switch\u003c\/strong\u003e. Designed for reliability and versatility, this CE-certified sensor supports both \u003cstrong\u003eNPN and PNP output types\u003c\/strong\u003e and operates across a wide voltage range of \u003cstrong\u003e6–36V DC\u003c\/strong\u003e, making it compatible with a broad range of industrial, workshop, and DIY control systems.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in multiple models — \u003cstrong\u003eE3F-R2NK, E3F-R2N1, E3F-R2PK, E3F-5DP1-5L, E3F-5DN1-5L\u003c\/strong\u003e — this sensor covers both \u003cstrong\u003e2-metre and 5-metre detection ranges\u003c\/strong\u003e to suit a variety of sensing distances and installation environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Models Available:\u003c\/strong\u003e E3F-R2NK \/ R2N1, E3F-R2PK, E3F-5DP1-5L, E3F-5DN1-5L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Output Types:\u003c\/strong\u003e NPN \u0026amp; PNP — select the output type that matches your controller or PLC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e 6–36V DC for broad compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetection Range:\u003c\/strong\u003e 2 metres or 5 metres depending on model\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE Certified:\u003c\/strong\u003e Meets relevant European compliance standards\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Plastic Housing:\u003c\/strong\u003e Lightweight yet sturdy for varied installation environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Safe for use in a wide range of applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCKCTINNER\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eE3F-R2NK, E3F-R2N1, E3F-R2PK, E3F-5DP1-5L, E3F-5DN1-5L\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNPN \/ PNP\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6–36V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2m \/ 5m\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eObject detection on conveyor lines and automated machinery\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and Arduino\/Raspberry Pi automation projects\u003c\/li\u003e\n  \u003cli\u003ePLC-based control systems and industrial counting\u003c\/li\u003e\n  \u003cli\u003eRobotics, CNC machines, and 3D printer end-stops\u003c\/li\u003e\n  \u003cli\u003eSecurity gate, door, and barrier detection systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between NPN and PNP output on the E3F photoelectric sensor?\u003c\/h4\u003e\n\u003cp\u003eA: NPN (sinking) output pulls the signal wire LOW when an object is detected, while PNP (sourcing) output pulls it HIGH. The correct choice depends on your controller's input type — most PLCs and microcontrollers specify which they accept. Choose the model (e.g. E3F-R2NK for NPN or E3F-R2PK for PNP) that matches your system.\u003c\/p\u003e\n\u003ch4\u003eQ: What detection range does this photoelectric proximity sensor support?\u003c\/h4\u003e\n\u003cp\u003eA: The E3F series offers models with either a 2-metre or 5-metre detection range. The E3F-R2NK and E3F-R2PK models provide a 2-metre range, while the E3F-5DP1-5L and E3F-5DN1-5L models extend sensing up to 5 metres — ideal for longer-range object detection applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this sensor compatible with Arduino or Raspberry Pi projects?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The wide 6–36V DC operating range and standard NPN\/PNP digital outputs make these sensors straightforward to integrate with Arduino, Raspberry Pi, or similar microcontroller platforms, provided you use an appropriate voltage level shifter or relay module when required.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the CE certification on this sensor mean?\u003c\/h4\u003e\n\u003cp\u003eA: CE certification indicates that the product meets relevant European Union safety, health, and environmental protection requirements. It confirms the sensor has been assessed to conform to applicable EU directives, giving you confidence in its quality and compliance for use in European markets and beyond.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between NPN and PNP output on the E3F photoelectric sensor?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"NPN (sinking) output pulls the signal wire LOW when an object is detected, while PNP (sourcing) output pulls it HIGH. The correct choice depends on your controller's input type — most PLCs and microcontrollers specify which they accept. 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