Yes my TIG has Pulse , and Sequencer ... and I can use a Momentary switch instead of a foot pedal when I like.
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But the Welders don't have PRE_HEATERS
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I back up.... My Sequencer can be adjusted not only to RAMP down when you release it.
It can also be adjusted to ramp UP for a pre-heat.
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One thing I hardly ever hear anyone talking about it pre-heat....
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I always have a quick start propane torch close by... Steel thru Aluminum...They all need it.
Sometimes I even use it to slow the cooling. Especially on cast
Even torch welding needs pre heat...Or you'll cold lap the metal.
I like my water cooled TIG.... Smaller.... I even have a few "Cups" that are cut down...
I only use a button cap on the back.... All my TIG rods are broke in half , then ground to a point.
I have a little case with about 10 of them ready to swap out.
Red..Old stuff , Gray and green are what I use...Steel or Aluminum.
Gotta Fly...