• Two relay outputs
  • Dual 4-digit LED displays of process and setpoint values
  • Accuracy: Thermocouple ±1.8°F (1ºC); RTD ±0.36°F (0.2ºC)
  • User friendly menus and tactile keypad for easy programming
  • One-touch autotuning
  • Select desired temperature display units (°F or °C)
  • Two "Latching" alarm relays standard with 8 Alarm modes
  • Accepts thermocouple and RTD inputs


Extech VFL Series Temperature PID Controllers now offer Fuzzy Logic enhanced PID and a Soft-Start feature that protects heaters from cold-starts. PID plus Fuzzy Logic tackles even the most demanding applications, eliminating over-shoot, unwanted process fluctuations and drift. The Soft Start feature is ideally suited for processes, such as those employed in the Thermo-Plastics industry, where careful, exact, and slow heating of product is required.

The Extech TFL Series have the following features:

  • Fuzzy Logic PID offers intuitive control simulating human control logic.
  • Single stage Ramp and Soak program with Ramp-to-Setpoint Limit that can be combined with the Soft Start feature for critical process demands.
  • Manual mode allows the user to override automatic control and drive the controller output higher or lower with the touch of a button.
  • Select thermocouple input type (9 selections) or RTD input (2 selections) from the display menu without the need for hardware modification.
  • Complete with mounting bracket hardware and screw terminals for easy wiring.

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