> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/hardware-products/hardware/petroleum-devices.md). # Petroleum Devices Browse Petroleum hardware guides and product pages.
DocumentationCover image
Commander
Run convenience and petro sites with an all-in-one management platform.		CommanderCommander.avif
C18
Switch between cashier and customer checkout workflows with a flexible POS terminal.		C18C18.png
Topaz
Manage forecourt and in-store operations with a touchscreen POS system.		TopazTopaz.avif
Ruby
Run high-volume retail and fuel sites with a durable POS system.		RubyRuby.avif
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