The list display is one of the display types you can add to a page in ESP, Haltech's Elite software. Instead of one gauge per channel, it shows several ECU channels together in a simple list, each with its live value. It's the most space-efficient way to keep an eye on a lot of data at once.
We use it for things we want to see but don't need a big gauge for: sensor voltages while checking wiring, a set of temperatures and pressures during a first start, or the inputs to a function you're setting up. You can give each list its own name, which helps when you have more than one on a page, like "Startup checks" or "Boost control".
To change what's shown, right-click the display and add or remove channels. When checking values, make sure every channel you expect is present and reading sensibly; a value frozen at zero or stuck at the end of its range points to a setup or wiring issue, not the display.
Other display options include the number display and trace display.
