PRT12-4DC Autonics Proximity Sensor
Autonics PRT12-4DC Inductive Proximity Sensor – M12, 4 mm, DC 2-Wire
Autonics PRT12-4DC is an M12 inductive proximity sensor with a 4 mm sensing distance and DC 2-wire output.
Designed for reliable metal detection in compact DC automation and control panels.
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The Autonics PRT12-4DC is a cylindrical inductive proximity sensor designed for detecting metal objects only in industrial automation environments. With its M12 threaded housing, 4 mm sensing distance (flush type), and DC 2-wire normally open output, it offers simple wiring and dependable performance in DC control circuits, compact machines, and OEM equipment.
Key Features
Detects metal objects only (inductive sensing principle)
Compact M12 cylindrical housing
4 mm sensing distance (flush / shielded)
DC 2-wire Normally Open (NO) output
Simple wiring for DC control circuits
Red LED operation indicator
Reverse polarity & surge protection
IP67 protection for industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PRT12-4DC |
| 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 | DC 2-Wire (NO) |
| Operating Voltage | 12–24 V DC |
| Leakage Current | ≤ 0.8 mA |
| Load Current | 5 – 100 mA |
| Residual Voltage | ≤ 3.5 V |
| 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
DC control & relay circuits
Compact automation panels
Packaging & assembly machines
OEM industrial equipment
Jigs & fixtures
Metal presence & limit detection
What’s in the Box
1 × Autonics PRT12-4DC Sensor
2 × Mounting nuts
Instruction leaflet
FAQ
Q1. What material can PRT12-4DC detect?
Only metal objects.
Q2. What does DC 2-wire mean?
The sensor operates using two wires only, simplifying DC wiring.
Q3. Is this sensor suitable for PLC inputs?
It can be used, but 3-wire sensors are preferred for PLC applications.
Q4. What is the sensing distance?
4 mm with a standard iron target.
Q5. Can it be used in dusty or oily environments?
Yes. IP67 protection ensures reliable operation.