描述
M18 Retro-Reflective Detection
E3FA-RN12 Retro-reflective Photoelectric Sensor
Stable reflector-based detection for compact industrial equipment. The E3FA-RN12 combines an adjustable 0 to 500 mm sensing distance, NPN output and M18 ABS body for presence detection, positioning and material handling tasks.
Reliable Detection With a Reflector
The E3FA-RN12 sends light toward a retro-reflector and switches when a target interrupts the returned beam. This sensing approach helps reduce the effect of target color and surface finish compared with direct-reflective sensing, while keeping installation simple.
- Separate reflector creates a clear and repeatable detection path
- 0 to 500 mm range suits compact machine stations
- M18 threaded body supports straightforward bracket installation
- NPN output integrates with compatible sinking-input controls

A Practical Choice for Reflector-Based Sensing
01 / USEFUL RANGEUp to 500 mm
Adjust the working distance for small conveyors, transfer points and machine fixtures.
02 / CLEAR SENSING PATHReflector-Based Detection
The target blocks the returned beam, helping to provide a stable detection condition.
03 / M18 MOUNTINGCompact ABS Housing
The black M18 threaded body fits standard sensor brackets and tight machine layouts.
E3FA-RN12 Technical Specifications
| Parameter | Specification |
|---|---|
| Model | E3FA-RN12 |
| Sensing Method | Retro-reflective, reflector required |
| Sensing Distance | 0 to 500 mm |
| Output | NPN |
| Housing Material | ABS |
| Housing Color | Black |
| Mounting | M18 threaded cylindrical body |
| Typical Applications | Industrial automation, conveyor and packaging detection |
| Body Size | M18 x 41 x 34.5 mm |
Where the E3FA-RN12 Fits Best
Use this model when you can install a reflector opposite the sensor and need reliable presence detection in a compact space.
01
Conveyor Detection
Detect cartons, trays and products as they interrupt the beam between sensor and reflector.
02
Packaging Machines
Confirm product presence before filling, sealing, labeling or transfer operations.
03
Parts Positioning
Verify that carriers or workpieces have reached a repeatable machine position.
04
Material Handling
Monitor object movement in sorting, transfer and compact storage equipment.
Selection and Installation Checklist
Plan the reflector position
Mount the reflector squarely to the sensor and keep the beam path clear. A rigid bracket helps maintain alignment during normal machine vibration.
Confirm output compatibility
Check PLC input type, wiring requirement and required output logic before installation. XSZ can confirm a suitable configuration from your application details.
Send These Details for Fast Selection
- Target material, size and speed
- Available reflector position and mounting space
- PLC input type and required output logic
- Quantity, cable requirement and operating environment
Product Questions
Frequently Asked Questions
01
Does the E3FA-RN12 need a reflector?
Yes. This is a retro-reflective sensor and requires a suitable reflector installed opposite the sensor.
02
Can it connect to a PLC?
Yes. The NPN output is intended for compatible sinking-input control circuits. Confirm the PLC input type before wiring.
03
Will target color affect detection?
Because the sensor monitors the reflected beam from its reflector, detection is generally less dependent on target color than a diffuse reflective sensor. Test clear, glossy or very small targets in the real application.
04
Can XSZ support OEM orders?
Yes. Send the quantity, cable, labeling and packaging requirements for factory evaluation.
Need Pricing or an E3FA-RN12 Sample?
Send the target, reflector position, PLC input and order quantity. XSZ will confirm the configuration before quotation.
XSZ Sensor Technology | Direct Factory Support






