Inductive Proximity Sensor | NPN PNP Proximity Switch IP67
Inductive Proximity Sensor | NPN PNP Proximity Switch IP67
Inductive proximity sensor (proximity switch) adopts cylindrical metal housing, available in M8, M12, M18, M30 dimensions. Powered by DC24V, 3-wire design with NPN and PNP output optional. Built with IP67 waterproof protection, maximum detection distance reaches 30mm. Featuring fast response speed, powerful anti-interference capability and stable performance. It realizes non-contact metal object detection, widely used for position detection on automated machinery, conveyor equipment and production lines. Cost-effective alternative to imported sensors, full model stock and OEM service for global automation distributors.
Inductive proximity sensor (proximity switch) adopts cylindrical metal housing, available in M8, M12, M18, M30 dimensions. Powered by DC24V, 3-wire design with NPN and PNP output optional. Built with IP67 waterproof protection, maximum detection distance reaches 30mm. Featuring fast response speed, powerful anti-interference capability and stable performance. It realizes non-contact metal object detection, widely used for position detection on automated machinery, conveyor equipment and production lines. Cost-effective alternative to imported sensors, full model stock and OEM service for global automation distributors.
Product Overview
Key Product Features
✅ Non‑Contact Inductive Detection
Detect metal targets by electromagnetic induction, no mechanical wear, long service life, avoid mechanical collision damage.
✅ DC 3‑Wire Circuit Design
Standard DC three‑wire configuration, main output type NPN Normally Open; other output types can be customized. Stable signal output, compatible with PLC and industrial control systems.
✅ Complete M8 / M12 / M18 Cylindrical Sizes
Full‑spec threaded metal housing, multiple sensing distance options for different installation space and detection‑range requirements.
✅ Fast Response & Strong Anti‑Interference
Quick signal response, built‑in anti‑interference circuit, resist electromagnetic disturbance from motors and inverters on‑site.
✅ Robust Metal Thread Housing
Threaded metal shell, convenient nut‑fixing installation, good mechanical strength, suitable for workshop equipment environment.
✅ LED Status Indicator
Built‑in indicator LED, real‑time visual working‑status feedback for easy on‑site commissioning and fault checking.
✅ Wide Operating Voltage Range
Suitable for common DC control power supply in automation equipment, convenient for integration into control cabinets and machinery.
Technical Specifications
| Item | Parameter |
|---|---|
| Product Series | LJ12A3 Inductive Proximity Sensor |
| Housing Thread Size | M8, M12, M18 |
| Power Supply | DC 10‑30V |
| Circuit Type | DC 3‑wire |
| Standard Output | NPN Normally Open (NO) |
| Sensing Object | Metal materials |
| Sensing Distance | Multiple options corresponding to different diameters |
| Indicator | Red LED working status indicator |
| Installation | Nut‑fixed threaded cylindrical mounting |
| Feature | Non‑contact detection, anti‑interference |
| Application | Automation machinery, production line, position & counting detection |
Application Scenarios
- Position detection & stroke limit for automated machinery equipment
- Object counting and metal workpiece sensing on production lines
- Conveyor belt material detection and trigger signal feedback
- Packaging, textile, printing machine automatic control
- PLC‑based automation system input signal collection
- Mechanical equipment safety protection and position monitoring
Our Advantages
Full‑size stock availability
M8/M12/M18 mainstream specifications in stock, support mixed‑order bulk delivery for equipment manufacturers.
Stable anti‑interference circuit design
Optimized internal circuit, stable performance under complex industrial electromagnetic field, reduce mis‑triggering failure.
Strict finished‑product testing
Each sensor undergoes detection‑distance calibration, output signal test and aging test before shipment to guarantee consistency.
Flexible custom‑order capability
Support custom output type, cable length and special‑version requirements for non‑standard equipment projects.
Complete technical support
Provide wiring diagrams, dimension drawings and datasheets for equipment design and project tender documents. Fast overseas technical response.
Custom Solution
- OEM Brand Customization: Print private brand logo and custom model number on sensor nameplate for branded resale.
- Electrical Customization: Custom output mode(NPN/PNP, NO/NC), special cable length according to equipment requirement.
- Special‑version adaptation: Custom cable type or connector‑type output for special machinery installation environment.
- Export‑oriented Custom Packing: Neutral carton, customer‑branded carton for long‑distance sea transportation.
- Project‑level Technical File Support: Supply CAD dimension drawings, wiring diagrams and datasheets for equipment certification and bidding.
- Large‑batch Priority Production: Priority production schedule for large automation‑equipment manufacturer orders.
Tell us thread size, sensing distance and output type, our engineers will confirm correct LJ12A3 model for you within 24 working hours.
FAQ
Q1: What objects can inductive proximity sensor detect?
Q2: What does DC 3‑wire NPN NO mean?
Q3: Which sizes are available for LJ12A3 series?
Q4: Can it connect directly to PLC input terminal?
Q5: Can cable length be customized?
Q6: Do you support OEM private‑label service for distributors?
Q7: What technical documents can you provide?
Product Overview
Key Product Features
✅ Non‑Contact Inductive Detection
Detect metal targets by electromagnetic induction, no mechanical wear, long service life, avoid mechanical collision damage.
✅ DC 3‑Wire Circuit Design
Standard DC three‑wire configuration, main output type NPN Normally Open; other output types can be customized. Stable signal output, compatible with PLC and industrial control systems.
✅ Complete M8 / M12 / M18 Cylindrical Sizes
Full‑spec threaded metal housing, multiple sensing distance options for different installation space and detection‑range requirements.
✅ Fast Response & Strong Anti‑Interference
Quick signal response, built‑in anti‑interference circuit, resist electromagnetic disturbance from motors and inverters on‑site.
✅ Robust Metal Thread Housing
Threaded metal shell, convenient nut‑fixing installation, good mechanical strength, suitable for workshop equipment environment.
✅ LED Status Indicator
Built‑in indicator LED, real‑time visual working‑status feedback for easy on‑site commissioning and fault checking.
✅ Wide Operating Voltage Range
Suitable for common DC control power supply in automation equipment, convenient for integration into control cabinets and machinery.
Technical Specifications
| Item | Parameter |
|---|---|
| Product Series | LJ12A3 Inductive Proximity Sensor |
| Housing Thread Size | M8, M12, M18 |
| Power Supply | DC 10‑30V |
| Circuit Type | DC 3‑wire |
| Standard Output | NPN Normally Open (NO) |
| Sensing Object | Metal materials |
| Sensing Distance | Multiple options corresponding to different diameters |
| Indicator | Red LED working status indicator |
| Installation | Nut‑fixed threaded cylindrical mounting |
| Feature | Non‑contact detection, anti‑interference |
| Application | Automation machinery, production line, position & counting detection |
Application Scenarios
- Position detection & stroke limit for automated machinery equipment
- Object counting and metal workpiece sensing on production lines
- Conveyor belt material detection and trigger signal feedback
- Packaging, textile, printing machine automatic control
- PLC‑based automation system input signal collection
- Mechanical equipment safety protection and position monitoring
Our Advantages
Full‑size stock availability
M8/M12/M18 mainstream specifications in stock, support mixed‑order bulk delivery for equipment manufacturers.
Stable anti‑interference circuit design
Optimized internal circuit, stable performance under complex industrial electromagnetic field, reduce mis‑triggering failure.
Strict finished‑product testing
Each sensor undergoes detection‑distance calibration, output signal test and aging test before shipment to guarantee consistency.
Flexible custom‑order capability
Support custom output type, cable length and special‑version requirements for non‑standard equipment projects.
Complete technical support
Provide wiring diagrams, dimension drawings and datasheets for equipment design and project tender documents. Fast overseas technical response.
Custom Solution
- OEM Brand Customization: Print private brand logo and custom model number on sensor nameplate for branded resale.
- Electrical Customization: Custom output mode(NPN/PNP, NO/NC), special cable length according to equipment requirement.
- Special‑version adaptation: Custom cable type or connector‑type output for special machinery installation environment.
- Export‑oriented Custom Packing: Neutral carton, customer‑branded carton for long‑distance sea transportation.
- Project‑level Technical File Support: Supply CAD dimension drawings, wiring diagrams and datasheets for equipment certification and bidding.
- Large‑batch Priority Production: Priority production schedule for large automation‑equipment manufacturer orders.
Tell us thread size, sensing distance and output type, our engineers will confirm correct LJ12A3 model for you within 24 working hours.
FAQ
Q1: What objects can inductive proximity sensor detect?
Q2: What does DC 3‑wire NPN NO mean?
Q3: Which sizes are available for LJ12A3 series?
Q4: Can it connect directly to PLC input terminal?
Q5: Can cable length be customized?
Q6: Do you support OEM private‑label service for distributors?
Q7: What technical documents can you provide?
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