PRL12-4DN Autonics Proximity Sensor
Autonics PRL12-4DN is a compact M12 inductive proximity sensor with a 4 mm sensing distance and NPN DC 3-wire output.
Designed for stable metal detection in PLC-controlled industrial automation.
The Autonics PRL12-4DN is a compact cylindrical inductive proximity sensor designed for accurate detection of metal objects only in industrial automation systems. With its M12 threaded housing, 4 mm sensing distance (flush type), and NPN DC 3-wire output, it offers reliable performance in control panels, packaging machines, and OEM automation equipment where space is limited.
Key Features
Detects metal objects only (inductive sensing principle)
Compact M12 cylindrical housing
4 mm sensing distance (flush / shielded)
NPN, DC 3-wire output
Suitable for PLC digital inputs
Red LED operation indicator
Reverse polarity & short-circuit protection
IP67 protection for industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PRL12-4DN |
| Sensor Type | Inductive Proximity Sensor |
| Housing Size | M12 |
| Installation | Flush (Shielded) |
| 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
Compact control & junction panels
Packaging & assembly machines
OEM automation equipment
Position, limit & presence detection
Space-constrained machinery
What’s in the Box
1 × Autonics PRL12-4DN Sensor
2 × Mounting nuts
Instruction leaflet
FAQ
Q1. What material can PRL12-4DN detect?
Only metal objects (inductive sensing).
Q2. Is PRL12-4DN suitable for PLC inputs?
Yes. It has NPN DC 3-wire output, commonly used with PLC digital inputs.
Q3. What is the sensing distance?
4 mm with a standard iron target.
Q4. What does flush mounting mean?
Flush mounting allows installation level with surrounding metal without false triggering.
Q5. Can it be used in dusty or oily environments?
Yes. IP67 protection ensures reliable operation.