--- title: More than just a signal tower | Auer Signal News & Blog description: The PC7 also meets all requirements as a 70mm warning beacon. Top and inline modules transform the signal tower into a fully functional signal beacon. image: https://blog.auersignal.com/hubfs/Beitragsbild-PC7-Signalleuchte.jpg --- [![Auer Signal logo](https://blog.auersignal.com/hubfs/raw_assets/public/AuerSignal_April2021/images/logo.svg "Auer Signal logo")](https://www.auersignal.com/en) [![Auer Signal logo mobile](https://blog.auersignal.com/hubfs/raw_assets/public/AuerSignal_April2021/images/logo_mobile.svg "Auer Signal logo mobile")](https://www.auersignal.com/) ![Auer Signal](https://blog.auersignal.com/hubfs/raw_assets/public/AuerSignal_April2021/images/auerSignal.svg "Auer Signal") [![basket](https://blog.auersignal.com/hubfs/raw_assets/public/AuerSignal_April2021/images/merkliste.svg)](https://www.auersignal.com/en/bookmarks/) - EN - [Deutsch](https://blog.auersignal.com/de) - [English](https://blog.auersignal.com/en) - [Italiano](https://blog.auersignal.com/it) - [Español](https://blog.auersignal.com/es) - [Français](https://blog.auersignal.com/fr) - [Signaling devices](https://www.auersignal.com/en/signaling-devices/) - [Ex proof](https://www.auersignal.com/en/atex-signaling-devices/) - [Industries](https://www.auersignal.com/en/industries/) - [About](https://www.auersignal.com/en/about/seven-reasons/) - [Contact](https://www.auersignal.com/en/sales-service/) - [Blog](https://blog.auersignal.com/en) Schließen    Hinweis: die Suchfunktion öffnet bei Tastaturanschlag automatisch ![Auer Signal](https://blog.auersignal.com/hubfs/raw_assets/public/AuerSignal_April2021/images/auerSignal.svg "Auer Signal") # More than just a signal tower: How the PC7 excels as a warning beacon The PC7 signal tower is not only a highly effective stack light for up to seven modules, but also functions as a standalone 70mm warning beacon with just a single module, thanks to its modular design. This flexibility enables a wide range of applications, as the modules can be easily combined, replaced, and expanded according to specific requirements. ![PC7 single beacon modules](https://blog.auersignal.com/hs-fs/hubfs/PC7-Signalleuchten-1.jpg?width=726&height=261&name=PC7-Signalleuchten-1.jpg) ## Top and Inline Modules: What's the difference? The PC7 consists of two module types, both of which can also be used as standalone signal lights in a single-module configuration, depending on the application.   ### ![PC7-Top-Modul](https://blog.auersignal.com/hs-fs/hubfs/PC7-Top-Modul.jpg?width=130&height=232&name=PC7-Top-Modul.jpg)**Top Module** - Ideal for use as a standalone 70mm warning beacon - Warning beacon module with a hemispherical lens design - Twice the light output compared to inline modules - Sealed surface, optimized for daily cleaning (IP66/IP67) - Can be combined with sound module ![PC7-Inline-Modull](https://blog.auersignal.com/hs-fs/hubfs/PC7-Inline-Modull.jpg?width=130&height=232&name=PC7-Inline-Modull.jpg) ### **Inline Module** - Optimal horizontal light distribution - Easy extension with additional modules - Can be combined with sound module     ## Single modules as fully functional warning beacons A PC7 base combined with a top module creates a fully functional 70mm warning beacon with a 180° light distribution. With a height of 80 mm, the top module is comparable to other medium-sized signal beacons but significantly outperforms similar products in terms of brightness. The top and inline modules are available with various functions: - steady light module - rotating light module - steady/flashing module - multi strobe module - multi color module - multifunctional module [see all modules](https://www.auersignal.com/en/tower-lights/modules/pc7/)       ## PC7 as a fully functional IO-Link beacon The product portfolio includes two different [IO-Link bases](https://www.auersignal.com/en/tower-lights/modules/pc7/base-modules/), enabling conventional PC7 light modules to be used as cost-effective and fully functional IO-Link signal beacons. ![IO-Link PC7 beacons](https://blog.auersignal.com/hs-fs/hubfs/PC7-IO-Link-Leuchten-2.jpg?width=431&height=287&name=PC7-IO-Link-Leuchten-2.jpg)     ## Pre-assembled PC7 beacons For the most commonly used PC7 single light combinations, pre-assembled models with dedicated short part numbers are available. | ![PC7-Q08](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q08.png?width=300&height=300&name=PC7-Q08.png) | ![PC7-Q09](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q09.png?width=300&height=300&name=PC7-Q09.png) | ![PC7-Q10](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q10.png?width=300&height=300&name=PC7-Q10.png) | ![PC7-Q11](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q11.png?width=300&height=300&name=PC7-Q11.png) | | --- | --- | --- | --- | | PC7-Q08 Top multi color module with M12 base, IO-Link | PC7-Q09 Inline multi color module with M12 base, IO-Link | PC7-10 Top multi color module with tube base,  24 V AC/DC | PC7-Q11 Inline multi color module with tube base,  24 V AC/DC | | ![PC7-Q12](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q12.png?width=300&height=300&name=PC7-Q12.png) | ![PC7-Q13](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q13.png?width=300&height=300&name=PC7-Q13.png) | ![PC7-Q14](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q14.png?width=300&height=300&name=PC7-Q14.png) | ![PC7-Q15](https://blog.auersignal.com/hs-fs/hubfs/PC7-Q15.png?width=300&height=300&name=PC7-Q15.png) | | PC7-Q12 Top steady/flashing module with tube base, 24 V AC/DC | PC7-Q13 Top steady/flashing module with tube base, 24 V AC/DC | PC7-Q14 Top steady/flashing module for surface mount, 24 V AC/DC | PC7-Q15 Top steady/flashing module for surface mount, 24 V AC/DC |     ## Conclusion: PC7 – a flexible, modular and versatile signal beacon Many signal towers are used as 2- or 3-stage traffic light solutions. However, the PC7 offers much more: Thanks to the modularity and functionality of its individual modules, it can serve not only as a conventional signal tower with up to seven positions but also as an optimized 70mm warning beacon when equipped with top modules. 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