Before the terrible Will Smith film this is the original TV version of a pair of cowboy/government agents. It's full of gadgets, James Bond style.
It aired on CBS between September 17, 1965 and April 4, 1969.
It was brought forward at a time when the television western was losing ground to spy narratives and characters (obviously),
In fact it was completely guileless in this ambition - as the show's creator, Michael Garrison, simply called it as "James Bond on horseback."
Amazingly - it stayed alive as a franchise and they made two television movies in 1979 and 1980, a motion picture in 1999 with a new cast and story (can you remember it? I must say I can not).