Thermo-Est offers a wide range of converters, threshold relays (2-wire technique supplied by the 4/20 mA loop and 4-wire technique with separate power supply) as well as indicators for mounting at the top of the rod, DIN rail or for flush mounting. in 96 x 48 format. The models are available in a fixed-range analog version or in a programmable version managed by a microprocessor with the option of Hart or Profibus type communication protocol.