描述
Longer Range Diffuse Detection
SZ-BXY202N Diffuse Reflective Photoelectric Sensor
Compact photoelectric detection for industrial automation tasks that need more working distance than short-range diffuse sensors. The SZ-BXY202N helps detect targets directly from reflected light, reducing reflector installation work on conveyors, packaging lines and handling machines.
500 mm class | NPN NO+NC | 10-30 VDC
Detect Objects Without Adding a Reflector
The SZ-BXY202N is designed for diffuse reflective sensing, so the target itself reflects light back to the sensor. This makes installation simpler in machine areas where adding a reflector is inconvenient, unstable or difficult to keep aligned.
- 500 mm class sensing distance supports longer machine-detection points
- NPN normally open and normally closed signals help match different control logic
- Compact rectangular body fits conveyor rails, fixtures and small equipment frames
- Suitable for object presence, counting, transfer and position confirmation

Built for Practical Automation Detection
500 mm Class Detection
Useful when the sensor must be mounted farther from the target because of guards, brackets, conveyors or limited machine space.
Reflector-Free Setup
The target reflects the sensing light directly, helping reduce alignment work and spare-part management compared with reflector-based detection.
NPN NO + NC Output
Normally open and normally closed output options help maintenance teams match existing PLC input logic during replacement or new installation.
SZ-BXY202N Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SZ-BXY202N |
| Sensor Type | Photoelectric sensor / photoelectric switch |
| Sensing Method | Diffuse reflective |
| Sensing Distance | 500 mm class, depending on target color, size and surface |
| Supply Voltage | 10 to 30 VDC |
| Output | NPN normally open + normally closed |
| Housing Material | ABS |
| Application | Industrial automation object detection |
| Customization | Cable length, labeling and packaging can be evaluated for bulk orders |
Where SZ-BXY202N Works Well
Choose this model when a compact sensor must detect a target directly and the machine layout benefits from a longer working distance.
Conveyor Presence Detection
Detect cartons, trays and moving parts where the sensor cannot be mounted very close to the target path.
Packaging Line Control
Confirm product arrival before labeling, sealing, filling or transfer steps.
Workpiece Position Check
Verify whether a carrier, fixture or part is in place before the next machine action starts.
Automated Material Handling
Support transfer, sorting and counting tasks in compact handling systems.
Before Choosing This Sensor
Diffuse sensors are affected by target color, reflectivity, size and angle. White or bright targets are usually easier to detect than dark, glossy, transparent or angled targets.
Keep safety margin in the distance
Do not design the machine at the absolute maximum sensing distance. Leave installation margin and test the actual target under normal speed, vibration and lighting conditions.
- Target material, color, size and moving speed
- Required sensing distance and installation angle
- PLC input type and required NO or NC signal
- Quantity, cable length, label and packaging requirements
Product Questions
Frequently Asked Questions
Does the SZ-BXY202N need a reflector?
No. It is a diffuse reflective photoelectric sensor and detects light reflected directly from the target.
Can it detect every target at 500 mm?
Not always. The reliable distance depends on the target material, color, size, finish and angle. Test the actual object before final installation.
Can it connect to a PLC?
Yes. Confirm the PLC input type first, then wire the NPN normally open or normally closed signal according to the machine logic.
Can XSZ support OEM requirements?
Yes. Send the quantity, cable length, label and packaging requirements so the factory can evaluate the configuration.
Need Pricing or an SZ-BXY202N Sample?
Send your target details, sensing distance, PLC input type and quantity. XSZ will confirm the configuration before quotation.
XSZ Sensor Technology | Direct Factory Support







