Digital temperature switches are basically with 3 options by mounting style ; integral or, with wall mounted digital unit or, with panel mounted digital unit. Various type of sensor types are possible like : various type of rtds or, thermocouples. Display : led or, lcd outputs : either one or, two nos. Digital outputs. Relay or, pnp (hysteresis optional) contact parts : ss 304 or, ss316 housing : ip 65 optional with ip 67, flameproof or, atex certified