Fourtech Temperature Controller Manual Free High Quality < Certified → >

| Code | Description | Typical Range/Options | Function | | :--- | :--- | :--- | :--- | | | Alarm 1 | 0 to Full Scale | Sets the temperature at which Alarm 1 triggers (Absolute High Alarm). | | AL2 | Alarm 2 | 0 to Full Scale | Sets the temperature for Alarm 2. | | Hy | Hysteresis | 0 to 50 | Prevents output "chattering" on/off. Usually set to 2–5°C. | | InPt | Input Type | 0 : K-type Thermocouple 1 : J-type 2 : T-type 3 : PT100 RTD | Crucial: Must match your sensor type. If the controller displays "EEEE" or wrong temp, check this. | | OutP | Output Type | 0 : Relay (On/Off) 1 : SSR (Voltage pulse) 2 : 4-20mA (Analog) | Sets how the controller sends signals to the heater. | | At | Auto-Tuning | OFF / ON | Starts PID self-learning sequence. | | P | Proportional Band | 1–999 | PID Parameter (lower = more aggressive heating). | | I | Integral Time | 0–3600 sec | PID Parameter. | | d | Derivative Time | 0–3600 sec | PID Parameter. | | LoL | Low Limit | -199 to Setpoint | Restricts the minimum allowed setpoint. | | HiL | High Limit | Setpoint to Full Scale | Restricts the maximum allowed setpoint (Safety cap). |

Most Fourtech models follow a standard 8-pin or 10-pin layout: fourtech temperature controller manual free