E3F Photoelectric Proximity Sensor Switch NPN PNP 6-36VDC
E3F Photoelectric Proximity Sensor Switch NPN PNP 6-36VDC
CKCTINNER E3F Photoelectric Proximity Sensor Switch
Upgrade your automation or detection setup with the CKCTINNER E3F Series Photoelectric Proximity Sensor Switch. Designed for reliability and versatility, this CE-certified sensor supports both NPN and PNP output types and operates across a wide voltage range of 6–36V DC, making it compatible with a broad range of industrial, workshop, and DIY control systems.
Available in multiple models — E3F-R2NK, E3F-R2N1, E3F-R2PK, E3F-5DP1-5L, E3F-5DN1-5L — this sensor covers both 2-metre and 5-metre detection ranges to suit a variety of sensing distances and installation environments.
Made in Mainland China.
Key Features
- Multiple Models Available: E3F-R2NK / R2N1, E3F-R2PK, E3F-5DP1-5L, E3F-5DN1-5L
- Dual Output Types: NPN & PNP — select the output type that matches your controller or PLC
- Wide Voltage Range: 6–36V DC for broad compatibility
- Detection Range: 2 metres or 5 metres depending on model
- CE Certified: Meets relevant European compliance standards
- Durable Plastic Housing: Lightweight yet sturdy for varied installation environments
- No High-Concern Chemicals: Safe for use in a wide range of applications
Specifications
| Brand | CKCTINNER |
| Model Numbers | E3F-R2NK, E3F-R2N1, E3F-R2PK, E3F-5DP1-5L, E3F-5DN1-5L |
| Output Type | NPN / PNP |
| Operating Voltage | 6–36V DC |
| Cable Length | 2m / 5m |
| Material | Plastic |
| Certification | CE |
| Origin | Mainland China |
Common Applications
- Object detection on conveyor lines and automated machinery
- DIY electronics and Arduino/Raspberry Pi automation projects
- PLC-based control systems and industrial counting
- Robotics, CNC machines, and 3D printer end-stops
- Security gate, door, and barrier detection systems
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Frequently Asked Questions
Q: What is the difference between NPN and PNP output on the E3F photoelectric sensor?
A: 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.
Q: What detection range does this photoelectric proximity sensor support?
A: 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.
Q: Is this sensor compatible with Arduino or Raspberry Pi projects?
A: 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.
Q: What does the CE certification on this sensor mean?
A: 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.