Description
SN04 Series Inductive Proximity Sensor – 4mm Detection Distance, 6–36V DC, NPN/PNP Output
The SN04 Inductive Proximity Sensor is a compact, reliable, and cost-effective solution for non-contact metal object detection. Ideal for industrial automation, robotics, 3D printers, and CNC applications, this sensor detects metallic targets within a 4mm sensing range. It operates on a wide 6–36V DC power supply and is available in NPN or PNP output configurations.
Encased in a durable plastic body with an LED status indicator, the SN04 is easy to mount and integrate into various systems for precise position sensing and object detection.
🔁 Variants:
| Model | Output Type | Output Logic | Cable Type | Detection Distance |
|---|---|---|---|---|
| SN04-N | NPN | Normally Open (NO) | 3-wire | 4mm |
| SN04-P | PNP | Normally Open (NO) | 3-wire | 4mm |
| SN04-N2 | NPN | Normally Closed (NC) | 3-wire | 4mm |
| SN04-P2 | PNP | Normally Closed (NC) | 3-wire | 4mm |
✅ Key Features:
-
Sensing Distance: 4mm (target: iron ≥ 15x15x1mm)
-
Output Type: NPN / PNP, NO or NC (depending on model)
-
Voltage Range: 6V–36V DC
-
Response Frequency: 500Hz typical
-
LED Indicator: Built-in status LED for operation feedback
-
Wiring Type: 3-wire (Brown = V+, Blue = GND, Black = Signal)
-
Mounting: M18 flat plastic body with mounting holes
-
Protection: Short-circuit and reverse polarity protection
⚙️ Technical Specifications:
| Parameter | Value |
|---|---|
| Operating Voltage | 6 – 36V DC |
| Output Current | ≤ 300mA |
| Detection Distance | 4mm ±10% |
| Response Frequency | ~500Hz |
| Output Indicator | LED (Red or Yellow) |
| Housing Material | Plastic |
| Operating Temperature | -25°C to +70°C |
| Cable Length | Approx. 1.2 meters |
| Mounting | M18 flat rectangular body |
🔧 Applications:
-
Industrial automation
-
Endstop sensors for 3D printers & CNC
-
Robotics & position feedback
-
Conveyor systems
-
Object/metal detection systems