It takes two items to vape in TC mode. The first item is a vape mod that offers temperature control vaping. As previously stated, temperature control is a firmware feature. Manufacturers may easily add the capability to the forthcoming series of vape mods since the work required to program TC mode is complete. There's a good chance the box mod you own supports TC mode if it was made in the last five years. The second item you want is a rebuildable atomizer or vape tank with a coil manufactured of a material with a suitable high TCR. If a coil has a low TCR, it is unsuitable for TC vaping since the resistance changes as the coil heats up is so minute that measuring it would require susceptible equipment.