Gefran F041865 refers to the model 4T-96-3-99-1, a universal temperature controller designed for industrial process control.

• Type: Universal temperature controller
• Manufacturer: Gefran
• Model Code: 4T-96-3-99-1
• Mounting Format: 96 × 48 mm DIN panel mount
• Power Supply: Typically 100–240V AC
• Display: Dual 4-digit LED display for process and setpoint values
• Input Types:
  • Thermocouples (J, K, T, R, S, B, E, N)
  • RTDs (Pt100)
  • Analog signals (0–10V, 4–20mA)
• Control Modes:
  • ON/OFF
  • PID (Proportional-Integral-Derivative)
  • Manual control
• Outputs:
  • Relay
  • SSR drive
  • Analog (optional)
• Alarms: Configurable for process deviation, sensor failure, etc.
• Protection Rating: IP65 front panel