pa18alp20tcm6sa - photo pr met m18 scr nc,plg

pa18alp20tcm6sa – photo pr met m18 scr nc,plg

Carlo Gavazzi PA18ALP20TCM6SA is a polarised retro-reflective M18 metal photoelectric sensor with a 2000 mm sensing range, 20–250 V AC supply, two-wire normally closed output and M12 connector.

SKU: PA18ALP20TCM6SAMPN: PA18ALP20TCM6SA
Price
List Price £113.62 ex VAT
Your Price (ex VAT)
£113.62
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

SUBTOTAL (EX VAT) £113.62
Trade pricing is personalised to your account

Manufacturer Lead Time

Sold in packs of 5

£113.62

Why Choose the Carlo Gavazzi PA18ALP20TCM6SA Photoelectric Sensor?

The Carlo Gavazzi PA18ALP20TCM6SA is a robust polarised retro-reflective photoelectric sensor designed for reliable object detection in industrial automation, material handling and machine control systems. As part of the Carlo Gavazzi PA18 series, it combines a durable threaded metal barrel housing with simple adjustment and dependable optical sensing.

The sensor uses polarised red modulated light to detect objects between the sensor and a suitable reflector, helping improve immunity to unwanted reflections from shiny surfaces. Its two-wire normally closed output and wide AC operating voltage range make it suitable for straightforward integration into industrial control circuits.

With a sensing distance of up to 2000 mm, a 20–250 V AC supply and an M12 connector, the PA18ALP20TCM6SA provides a practical sensing solution for production machinery, conveyors, packaging equipment and general factory automation.

Key Advantages

  • Polarised retro-reflective sensing helps reduce false detection from reflective surfaces.
  • 2000 mm sensing range for reliable object detection across machinery and conveyor systems.
  • Wide 20–250 V AC operating voltage for flexible industrial integration.
  • Two-wire normally closed output suited to conventional control circuits.
  • Durable metal M18 threaded barrel housing for demanding industrial environments.
  • IP67 protection against dust and temporary water immersion.

Key Features

  • Carlo Gavazzi PA18 series photoelectric sensor.
  • Polarised retro-reflective sensing principle.
  • 2000 mm maximum sensing distance.
  • Polarised red modulated light, 660 nm.
  • 20–250 V AC power supply.
  • Two-wire normally closed (NC) output.
  • M12 plug connection.
  • IP67 rated metal housing.
  • Manual sensitivity adjustment for application setup.
  • LED output indication for convenient status monitoring.

Reliable Photoelectric Detection for Industrial Automation

Polarised retro-reflective sensors operate by transmitting light towards a reflector and monitoring the returned beam. When an object interrupts the reflected light path, the sensor changes its output state, allowing machinery and automation systems to identify the presence or absence of materials, components or packages.

The PA18ALP20TCM6SA uses polarised light to improve discrimination between the intended reflector and reflections from shiny objects. Its metal M18 housing, IP67 protection and wide AC operating range make it particularly well suited to general-purpose industrial sensing applications.

Typical Applications

  • Conveyor object and package detection.
  • Packaging and bottling machinery.
  • Production and assembly equipment.
  • Material handling systems.
  • Automated doors, gates and access systems.
  • Industrial machine position and presence detection.

Technical Specifications

Manufacturer Carlo Gavazzi
Series PA18
Model PA18ALP20TCM6SA
Product type Photoelectric sensor
Sensing principle Polarised retro-reflective
Sensing range 2000 mm
Light source Polarised red modulated light
Wavelength 660 nm
Supply voltage 20–250 V AC
Output Type Two-wire
Output function Normally closed (NC)
Switching mode Dark switching
Connection type M12 connector
Housing style Cylindrical threaded barrel
Housing size M18
Housing material Metal
Protection rating IP67
Switching frequency 25 Hz
Operating temperature -20 to +60 °C
Housing length approx. 71.5 mm
IP Rating IP67
Output Type Two-wire (SCR)
Sensing Principle Photoelectric - retro-reflective
Housing Size M18
Sensing Distance 2000 mm
Output Function NC
Connection M12 connector

Frequently Asked Questions

What is the Carlo Gavazzi PA18ALP20TCM6SA used for?

The PA18ALP20TCM6SA is used for non-contact object detection in industrial automation, conveyor, packaging and machinery applications.

What is the sensing range of the PA18ALP20TCM6SA?

The sensor provides a sensing distance of up to 2000 mm when used with a suitable retro-reflective target.

What type of sensing technology does this sensor use?

It uses polarised retro-reflective photoelectric sensing, which helps reduce unwanted switching caused by reflections from shiny objects.

What supply voltage does the PA18ALP20TCM6SA require?

The sensor is designed for a wide 20–250 V AC supply range.

What output configuration does this sensor have?

The PA18ALP20TCM6SA has a two-wire normally closed (NC) output with dark-switching operation.

How is the PA18ALP20TCM6SA connected?

The sensor is equipped with an M12 plug connector, allowing convenient connection to compatible industrial sensor cabling.

Trusted by Industrial Automation Engineers

Carlo Gavazzi photoelectric sensors are widely used in industrial automation and machine control systems where reliable non-contact object detection, robust construction and straightforward installation are required.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...