Procurement teams shortlist PR18-5AC with Autonics Photoelectric Sensor, Contrinex Proximity Sensor and Autonics Tcn4 Series, aligning budget approvals, warranty terms, and multisite availability for smoother rollout across plants.
Autonics PR18-5AC Proximity Sensor
The Autonics PR18-5AC Proximity Sensor provides a 5mm sensing distance with Normally Closed output and a durable M18 sensing side diameter for reliable metal object detection. Manufactured by Autonics, this proximity sensor from the PR Series ensures stable operation with hysteresis max. 10 of sensing distance and a standard sensing target 18Γ18Γ1mm (iron). It runs on an AC 2-wire type 100β240VAC~ supply, supports a 20Hz response frequency, and includes robust IP67 protection for harsh industrial environments.

| Brand | Autonics |
| Product Type | Proximity Sensor |
| Model Number | PR18-5AC |
Autonics PR18-5AC Proximity Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing side diameter | M18 |
| Sensing distance | 5mm |
| Hysteresis(distance) | Max. 10% of sensing distance |
| Standard sensing target | 18Γ18Γ1mm(iron) |
| Current specification | Leakage current: Max. 2.5mA |
| Control output | Normally Closed |
| Wire type and power | AC 2-wire type100-240VAC~ |
| Installation | Flush |
| Cable Standard/material | Standard cable |
| Body length | Standard type |
| Insulation type | Double insulation or reinforced insulation(mark: @(INS), dielectric strength between the measuring input part and the power part: 1kV) |
| Residual voltage | Max. 10V |
| Environment_Ambient temperature | -25 to 70β, storage: -30 to 80β |
| Environment_Ambient humidity | 35 to 95% RH, storage: 35 to 95% RH |
| Protection structure | IP67(IEC standard) |
| Material | Brass(nickel plated) |
| Response frequency | 20Hz |
| Weight | Approx. 130g(approx. 118g) |
The Autonics PR18-5AC Proximity Sensor is part of the trusted Autonics PR Series, offering high-performance AC-type inductive metal detection for automation systems. It features a 5 mm sensing range, 100β240 VAC two-wire input, and a Normally Closed output for dependable switching in harsh industrial conditions. Engineered with a nickel-plated brass housing and IP67-rated sealing, it resists dust, oil, and vibration. With its 20 Hz response frequency and robust insulation, the Autonics PR18-5AC Proximity Sensor delivers consistent accuracy and durability in electrical and mechanical control systems.
In industrial automation, assembly, and process control systems, the Autonics PR18-5AC Proximity Sensor is widely used for metal detection, position control, and limit sensing applications. It performs effectively across conveyors, packaging lines, automated machinery, and machine tool equipment. Designed with flush mounting capability, it ensures precise detection without interference from surrounding metal parts. The AC 2-wire design simplifies wiring and enables direct connection to relays or contactors, reducing installation time. Resistant to oil, humidity, and shock, the Autonics PR18-5AC Proximity Sensor ensures stable detection for OEMs, maintenance engineers, and automation integrators working in demanding industrial environments.
Autonics Corporation is a global leader in industrial automation sensors, recognized for high-quality and reliable products. The PR18-5AC Proximity Sensor upholds Autonicsβ legacy of precision and durability through strict ISO-certified manufacturing standards. Known for their strong performance and long lifespan, Autonics Proximity Sensors are trusted by OEMs and factory automation engineers across India. Each sensor undergoes rigorous testing to guarantee consistent sensing performance, electrical insulation, and environmental resistance. Backed by Autonicsβ technical expertise and support network, the PR18-5AC delivers stable operation and ensures confidence in industrial automation integration projects.
Within the Autonics PR Series, the PR18-5AC represents the AC Type, Normally Closed configuration used in control systems requiring continuous current flow during normal conditions. For systems needing signal activation upon metal detection, the equivalent variant is the PR18-5AO, offering a Normally Open output while maintaining the same 5 mm sensing distance, 100β240 VAC supply, and IP67-rated protection. Both models share identical M18 flush mounting design and mechanical housing, ensuring installation flexibility and reliability. The PR18-5AC remains ideal for Normally Closed control logic applications requiring safe and consistent operation.
The Autonics PR18-5AC Proximity Sensor combines AC 2-wire operation, IP67 durability, and 5 mm sensing precision for industrial automation systems in India. With a Normally Closed output and flush M18 design, it offers reliable performance in conveyors, machinery, and automated lines. Supported by Autonicsβ engineering expertise and global service network, the PR18-5AC Proximity Sensor ensures accuracy, long lifespan, and dependable integration for engineers and OEMs seeking consistent metal detection solutions.




