SN04 Series Square Inductive Proximity Switch | NPN Proximity Sensor 6-36V DC
SN04 Series Square Inductive Proximity Switch | NPN Proximity Sensor 6-36V DC
SN04 series square inductive proximity switch is compact square-type metal detection sensor. Full model range: SN04-N, N2, P, P2, D, D2, Y, Y2. It supports DC 6~36V and AC power supply, optional 2-wire or 3-wire wiring, normally open (NO) and normally closed (NC) output. Equipped with red LED working indicator, realizing non-contact metal target detection. Widely used for position limit, counting and object sensing in automated machinery, packaging equipment and production lines. Full stock and OEM customization available for global automation equipment distributors.
SN04 series square inductive proximity switch is compact square-type metal detection sensor. Full model range: SN04-N, N2, P, P2, D, D2, Y, Y2. It supports DC 6~36V and AC power supply, optional 2-wire or 3-wire wiring, normally open (NO) and normally closed (NC) output. Equipped with red LED working indicator, realizing non-contact metal target detection. Widely used for position limit, counting and object sensing in automated machinery, packaging equipment and production lines. Full stock and OEM customization available for global automation equipment distributors.
1. Product Overview
2. Core Competitive Features
✅ Complete SN04 Full Series Models
SN04-N/N2/P/P2/D/D2/Y/Y2 multiple versions to match different controller and circuit requirements
✅ Multiple Wiring & Output Options
Optional 2-wire /3-wire; NPN / PNP; Normally Open(NO) / Normally Closed(NC)
✅ Dual DC & AC Power Supported
DC 6~36V wide voltage range, AC alternative models available for different power supply systems
✅ Built-in Red LED Working Indicator
Directly view sensor operating status, convenient for on-site wiring inspection and troubleshooting
✅ Compact Square Plastic Housing
Small footprint, simple fixed installation with mounting slots, fit limited installation space
✅ Non-contact Inductive Detection
No mechanical abrasion, long service life, low failure rate
✅ Excellent Anti-electromagnetic Interference
Optimized internal PCB circuit, stable signal output under complex workshop environment
✅ Simple Installation & Easy Wiring
Standard wire color definition, clear wiring label printed on sensor housing
3. Main Product Specifications
| Item | Technical Parameter |
|---|---|
| Product Series | SN04 Square Inductive Proximity Switch |
| Available Models | SN04-N, SN04-N2, SN04-P, SN04-P2, SN04-D, SN04-D2, SN04-Y, SN04-Y2 |
| Power Supply | DC 6V ~ 36V; AC optional versions |
| Wiring Mode | 2-Wire / 3-Wire |
| Output Type | NPN / PNP, Normally Open (NO) / Normally Closed (NC) |
| Load Current | Max 300mA |
| Detection Object | Ferrous metal (Iron, Steel) |
| Detection Distance | 4mm Standard Sensing Distance |
| Indicator Light | Red LED operation indicator |
| Housing Material | Engineering Plastic |
| Core Advantages | Compact size, multiple model choices, visual LED indicator, stable signal |
| Working Temperature | -20°C ~ +65°C |
| Typical Application | Automated machinery, packaging machines, conveyor equipment |
| Service Support | Factory wholesale, all models spot stock, OEM customization & export packaging |
4. Wide Application Scenarios
- Automated production line position detection and counting
- Packaging machinery, textile machinery, printing equipment limit control
- Conveyor belt material detection
- Pneumatic & hydraulic machinery stroke position sensing
- Small automation equipment limit switch replacement
- Logistics sorting machinery, lifting equipment position monitoring
5. Installation & Operation Guide
- Choose the corresponding SN04 model (NPN/PNP, NO/NC) according to your PLC or controller input requirement.
- Secure the square proximity sensor via mounting holes on both sides of plastic housing.
- Keep the sensing face aligned with detected metal target; maintain proper 4mm detection distance.
- Wire strictly following the printed wiring diagram on sensor label (BN Brown, BK Black, BU Blue).
- Avoid installing near high-power cables, inverters or motors to prevent signal interference.
- Check red LED light status during commissioning; LED turns on when metal enters detection zone.
6. FAQ | Frequently Asked Questions
Q1: What is the difference between SN04-N and SN04-P?
Q2: What detection distance for SN04 series proximity switch?
Q3: Can SN04 proximity sensor detect plastic, wood or glass?
Q4: What does SN04-N2 / P2 stand for?
Q5: Can you provide customized cable length for bulk export orders?
7. Factory Wholesale Advantages
- Direct automation sensor manufacturer, competitive factory price for overseas bulk orders without middlemen.
- Every SN04 proximity switch undergoes continuous aging testing before delivery to guarantee stable quality.
- Complete SN04 model inventory, fast delivery for global electrical distributors and automation engineering buyers.
- Professional technical support for model selection, wiring guidance and technical parameter consultation.
- Shockproof export carton packaging to protect products during long-distance sea transportation.
- Flexible OEM service to meet personalized demands for different regional automation markets.
1. Product Overview
2. Core Competitive Features
✅ Complete SN04 Full Series Models
SN04-N/N2/P/P2/D/D2/Y/Y2 multiple versions to match different controller and circuit requirements
✅ Multiple Wiring & Output Options
Optional 2-wire /3-wire; NPN / PNP; Normally Open(NO) / Normally Closed(NC)
✅ Dual DC & AC Power Supported
DC 6~36V wide voltage range, AC alternative models available for different power supply systems
✅ Built-in Red LED Working Indicator
Directly view sensor operating status, convenient for on-site wiring inspection and troubleshooting
✅ Compact Square Plastic Housing
Small footprint, simple fixed installation with mounting slots, fit limited installation space
✅ Non-contact Inductive Detection
No mechanical abrasion, long service life, low failure rate
✅ Excellent Anti-electromagnetic Interference
Optimized internal PCB circuit, stable signal output under complex workshop environment
✅ Simple Installation & Easy Wiring
Standard wire color definition, clear wiring label printed on sensor housing
3. Main Product Specifications
| Item | Technical Parameter |
|---|---|
| Product Series | SN04 Square Inductive Proximity Switch |
| Available Models | SN04-N, SN04-N2, SN04-P, SN04-P2, SN04-D, SN04-D2, SN04-Y, SN04-Y2 |
| Power Supply | DC 6V ~ 36V; AC optional versions |
| Wiring Mode | 2-Wire / 3-Wire |
| Output Type | NPN / PNP, Normally Open (NO) / Normally Closed (NC) |
| Load Current | Max 300mA |
| Detection Object | Ferrous metal (Iron, Steel) |
| Detection Distance | 4mm Standard Sensing Distance |
| Indicator Light | Red LED operation indicator |
| Housing Material | Engineering Plastic |
| Core Advantages | Compact size, multiple model choices, visual LED indicator, stable signal |
| Working Temperature | -20°C ~ +65°C |
| Typical Application | Automated machinery, packaging machines, conveyor equipment |
| Service Support | Factory wholesale, all models spot stock, OEM customization & export packaging |
4. Wide Application Scenarios
- Automated production line position detection and counting
- Packaging machinery, textile machinery, printing equipment limit control
- Conveyor belt material detection
- Pneumatic & hydraulic machinery stroke position sensing
- Small automation equipment limit switch replacement
- Logistics sorting machinery, lifting equipment position monitoring
5. Installation & Operation Guide
- Choose the corresponding SN04 model (NPN/PNP, NO/NC) according to your PLC or controller input requirement.
- Secure the square proximity sensor via mounting holes on both sides of plastic housing.
- Keep the sensing face aligned with detected metal target; maintain proper 4mm detection distance.
- Wire strictly following the printed wiring diagram on sensor label (BN Brown, BK Black, BU Blue).
- Avoid installing near high-power cables, inverters or motors to prevent signal interference.
- Check red LED light status during commissioning; LED turns on when metal enters detection zone.
6. FAQ | Frequently Asked Questions
Q1: What is the difference between SN04-N and SN04-P?
Q2: What detection distance for SN04 series proximity switch?
Q3: Can SN04 proximity sensor detect plastic, wood or glass?
Q4: What does SN04-N2 / P2 stand for?
Q5: Can you provide customized cable length for bulk export orders?
7. Factory Wholesale Advantages
- Direct automation sensor manufacturer, competitive factory price for overseas bulk orders without middlemen.
- Every SN04 proximity switch undergoes continuous aging testing before delivery to guarantee stable quality.
- Complete SN04 model inventory, fast delivery for global electrical distributors and automation engineering buyers.
- Professional technical support for model selection, wiring guidance and technical parameter consultation.
- Shockproof export carton packaging to protect products during long-distance sea transportation.
- Flexible OEM service to meet personalized demands for different regional automation markets.
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