Eaton SL7 Complete Devices are pre-configured Eaton SL7 signal towers that combine all the necessary components into a single, ready-to-use unit. This is a convenient option for users who don't require the customization offered by the modular system.

Base module: Provides a stable foundation for the signal tower.
Light modules: These come in various colours (red, yellow, and green are common) and provide visual signalling. The number of light modules will depend on the specific complete device model.
Pre-programmed flash pattern: The light modules might have a fixed flash pattern (e.g., single flash, double flash) or continuous light, depending on the model.

Some Eaton SL7 Complete Devices might also include:
Acoustic module: This adds an audible alarm to the visual signalling.

Some advantages of using Eaton SL7 Complete Devices are:

Convenience: They are quick and easy to install since they come pre-assembled.
Cost-effective: For applications that don't require customization, complete devices can be a more economical option compared to purchasing individual modules.
Standardized signalling: Using pre-configured devices ensures consistent visual and potentially audible signals across different machines or areas of a facility.

However, there are also some limitations to consider:

Less flexibility: Complete devices lack the modularity of the SL7 system. You cannot add or remove light modules or change the flash pattern to suit specific needs.
Limited options: The selection of pre-configured complete devices might be limited compared to the range of possible combinations with the modular system.

The Eaton SL7 Complete Devices is a good choice for users who require a simple and cost-effective solution for visual and potentially audible alarms in industrial settings, where pre-determined signalling is sufficient. If you need more flexibility in customizing the light colours, flash patterns, or adding features like acoustic modules, then the modular Eaton SL7 system with individual light and acoustic modules might be a better option.