In the world of warehouse management and logistics, efficiency and accuracy are key to ensuring competitiveness. One of the most innovative systems that has gained popularity in recent years is Pick to Light.
This system, which combines lighting technology and management software, significantly optimizes the picking process (product collection), reducing errors and increasing productivity. Therefore, it is important to understand what Pick to Light is, how it works, its advantages, and why it is an ideal solution for companies looking to improve warehouse management.
What is Pick to Light?
Pick to Light is a light-guided warehouse management system used in companies to facilitate the picking process, i.e., the collection and preparation of orders. This system uses LED light signals installed on shelves and in storage areas to indicate to operators the exact locations where they should pick up the products.
Each light is associated with a display that shows the number of items to be picked, making the preparation system more intuitive and faster compared to traditional paper-based inventory methods, resulting in fewer errors in the order preparation system.
Origin and evolution of the Pick-to-Light system
The idea for Pick to Light emerged in the 1980s in response to the need for a more agile picking method that was less prone to human error. With the imminent rise of digitization and automation in the 1990s, this technology was refined and became more accessible to companies of different sizes. Today, Pick to Light is common in sectors such as the automotive industry, retail distribution, and manufacturing, where speed and accuracy are critical to managing multiple orders at once.
How does a Pick to Light system work?
The operation of the light picking system is relatively simple, but it requires an adequate infrastructure that combines hardware and software to transmit stock movements and inventory information in real time. The main components and typical workflow are described below:
Components of a Pick to Light system
- LED light systems and displays: LED lights are installed on shelves or in picking areas. Each light is linked to a digital display with numeric displays that show the number of units to be picked to facilitate the work of operators.
- Confirmation buttons: Next to each LED light, there is a button that allows the operator to confirm that they have picked the correct product in the indicated quantity, allowing inventory information to be updated in real time.
- Management software: A warehouse management system (WMS) that controls and coordinates the entire picking process through each of the channels to be used. The WMS sends the picking orders to the Pick to Light system.
- User interface: A screen or device that displays picking orders and stock movements to the WMS. It can be used by supervisors to monitor how many units need to be picked and to press a confirmation key once the units have been picked.
Order preparation process with Pick to Light
- Order generation: The WMS generates a picking order based on a customer order to start preparing a new order.
- Light activation: Once the order is generated, the Pick to Light system automatically turns on the light device corresponding to the locations where the products to be picked are located.
- Product collection: Operators move through the shelves following the lights. When they reach the indicated location, they verify the number of units shown on the display on the dynamic shelves and collect the product. Hence the importance of integrating a numeric display equipped with a connection to the entire system.
- Confirmation: After removing the corresponding units, the operator presses the confirmation button so that the system proceeds to turn off the light and update the software, indicating that the item has been picked.
- Order completion: The process is repeated until all the products in the order have been picked and confirmed. In this way, picking errors are avoided and several operators can work at the same time thanks to the system with electronic indicators.
Advantages of pick-to-light
Adopting a pick-to-light system offers a number of benefits that can significantly improve a warehouse’s operational efficiency and prevent errors in order preparation. Some of the main advantages are:
1. Reduction of errors in logistics
One of the main benefits of Pick to Light is the reduction of errors in product picking. By working with a display to indicate the products to be picked to the operator, the risk of manual errors, such as picking the wrong product or an incorrect quantity, is minimized. In addition, it prevents another operator from picking it because when it is confirmed, a signal is sent, immediately turning off the front light on each shelf.
2. Increased productivity
Pick to Light optimizes workflow by allowing operators to move quickly from one point to another, without the need to consult paper picking lists or mobile devices. As soon as the display lights up, they know where to go. This increases picking speed and improves overall productivity.
3. Easy training and use
This is a streamlined, error-free system that is very easy to use, meaning that new employees can be trained quickly. Without a doubt, it is the picking system that requires the least training, which is especially valuable during peak seasons when temporary staff are hired.
4. Real-time software monitoring
Pick to Light systems are connected to warehouse management software that automatically lights up locations each time an order is initiated, allowing supervisors to monitor order progress in real time. This makes it easy to identify bottlenecks and make informed decisions to improve efficiency and avoid manual picking.
5. Flexibility with merchandise
Pick-to-light technology is adaptable and can be integrated into different warehouse configurations. The system can be adjusted for different product types, warehouse sizes, and order volumes, making it ideal for a wide range of industrial applications.
6. Improved customer satisfaction
By reducing errors and speeding up the picking process, companies can fulfill orders more quickly, which translates into improved customer satisfaction. Customers receive the correct products in less time, which reinforces their trust in the supplier.
7. Reduced operating costs
By improving efficiency and reducing errors, this system helps reduce costs associated with returns and order corrections. In addition, faster employee training means less time and resources spent on training. While Pick to Light requires an initial investment, it will undoubtedly save you money in the future.
8. Optimize warehouse space
With the accuracy offered by Pick to Light, it is possible to optimize the layout and picking of orders in the warehouse, maximizing the use of available space and facilitating access to the most requested products.
When is it appropriate to use Pick-to-Light?
Although Pick to Light offers numerous advantages, it is most suitable in certain scenarios:
- Warehouses with high order volumes: In distribution centers with a large number of daily orders, the speed and accuracy offered by Pick to Light can make a significant difference in productivity.
- Operations with high turnover products: For fast-moving products that require frequent picking, this system can reduce the time needed to complete orders.
- Environments with product variability: Pick to Light is ideal in warehouses where products vary in size, shape, or weight, as the system can be configured to accommodate these differences.
- Need to reduce errors: Companies that experience high picking error rates and want to improve accuracy without significantly increasing training or supervision costs.
Future of the pick-to-light system
With advances in technology and the growing demand for efficiency in warehouse management, Pick to Light is expected to evolve further. Future trends could include:
- Integration with augmented reality (AR) technologies: Combining Pick to Light with AR glasses could provide real-time information directly in the field of view of operators, further improving picking accuracy and speed.
- Use of artificial intelligence (AI): AI algorithms could analyze historical data and order patterns to optimize product placement and picking routes, making the process even more efficient.
- Full automation: Integrate Pick to Light with autonomous robots to perform picking tasks in a fully automated manner in smart warehouses.
Are Pick to Light and Put to Light systems the same thing?
A frequent question about these types of systems is whether Pick to Light and Put to Light are the same thing, and the truth is that they are not. While the former is based on managing product collection for order management, Put to Light is a warehouse management system that also works with lights, but focuses on the act of placing collected products in the containers in which they will be shipped to end customers.
Undoubtedly, integrating both systems in a warehouse will create a dynamic picking process in every sense, but in terms of their individual meanings, they are not the same thing.
Conclusion of the article
The Pick to Light system is a powerful tool for improving efficiency, accuracy, and speed in warehouse picking operations. Its ability to dramatically reduce errors, increase productivity, and facilitate employee training makes it a valuable solution for companies in a wide variety of industries.
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