PR12-4DN Autonics Proximity Sensor
Autonics PR12-4DN Inductive Proximity Sensor – M12, 4 mm, NPN, DC 3-Wire
Autonics PR12-4DN is an M12 inductive proximity sensor with 4 mm sensing distance and NPN DC 3-wire output.
Ideal for metal object detection in PLC-based industrial automation and control panel applications.
The Autonics PR12-4DN is a high-reliability inductive proximity sensor designed to detect metal objects only. Featuring an M12 threaded housing, 4 mm sensing distance (non-flush type), and NPN DC 3-wire output, it is ideal for industrial automation systems requiring longer sensing range with stable performance.
Key Features
Detects metal objects only (inductive sensing)
M12 cylindrical housing
4 mm sensing distance (non-flush / unshielded)
NPN, DC 3-wire output
Red LED operation indicator
Reverse polarity & short-circuit protection
Fast response and high repeatability
IP67 protection for industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PR12-4DN |
| Sensor Type | Inductive Proximity Sensor |
| Housing Size | M12 |
| Installation | Non-flush (Unshielded) |
| Sensing Distance | 4 mm |
| Setting Distance | 0 – 2.8 mm |
| Standard Target | Iron 12 × 12 × 1 mm |
| Output Type | NPN |
| Wiring | DC 3-Wire |
| Supply Voltage | 12–24 V DC (10–30 V DC operating) |
| Current Consumption | ≤ 10 mA |
| Control Output | Max. 200 mA |
| Response Frequency | Approx. 500 Hz |
| Indicator | Red LED |
| Protection Rating | IP67 |
| Ambient Temperature | −25 °C to +70 °C |
| Cable Length | 2 m |
| Body Material | Nickel-plated brass |
| Sensing Face | PBT |
Applications
PLC-based automation systems
Conveyor & material handling
Packaging & assembly machines
CNC & special-purpose machines
Control & junction panels
Position, limit & counting detection
What’s in the Box
1 × Autonics PR12-4DN Sensor
2 × Mounting nuts
1 × Washer
Instruction leaflet
FAQ
Q1. What material can PR12-4DN detect?
Only metal objects (inductive sensing).
Q2. What is the difference between PR12-2DN and PR12-4DN?
PR12-4DN offers a longer sensing distance (4 mm) and is non-flush, while PR12-2DN is flush with 2 mm range.
Q3. Is this sensor suitable for PLC input?
Yes. It has NPN DC 3-wire output, widely used with PLCs.
Q4. Can it be used in dusty or oily environments?
Yes. IP67 protection ensures reliable operation.
Q5. What is the sensing distance?
4 mm for standard iron target.