The STT700 is an exciting new addition to the SmartLine Temperature portfolio and upgrades the widely-used STT250 temperature transmitter. The STT250 has been Honeywell’s main temperature transmitter with many decades of in-field use. The STT700 is a direct replacement for the STT250 and thus is suitable for the majority of process applications including those for control and safety while delivering excellent performance at a low installed cost.​

  • SmartLine platform features including SmartLine Connection Advantage when used with Experion
  • Single input supporting up to 4-wire RTD sensor connection
  • Dual input option supporting up to two (2) 3-wire RTD sensor connections
  • Digital accuracy up to 0.15°C for RTD
  • Callendar-Van Dusen sensor constants input
  • HART7 communications
  • DE communications
  • Field housing, head mount, panel mount and DIN rail mounting options
  • Transmitter and sensor diagnostics
  • FM / CSA / ATEX / IEC Ex approvals
  • Full compliance with SIL 2 / 3 requirement
  • Up to a 4-year warranty

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