The TEQD-2301B is a sophisticated digital controller known for its dual-display interface, relay or SSR output options, and high-precision PID (Proportional-Integral-Derivative) logic. However, like any advanced instrument, its full potential is unlocked only through a thorough reading of its manual.

| Code | Parameter | Typical Setting | Explanation | | :--- | :--- | :--- | :--- | | | Proportional Band | 30.0 | Lower number = aggressive heating. | | I | Integral Time | 240 sec | Eliminates temperature drift. | | d | Derivative Time | 60 sec | Prevents overshoot. | | Sc | Sensor Correction | 0.0 | Use this to offset a faulty sensor (+/- 5°C). | | Hy | Hysteresis | 2.0 | ON/OFF switching differential (for relay mode). |

If you have lost your physical copy, search for the PDF using the exact phrase "TEQD-2301B user manual PID controller" and verify the document includes the parameter table (specifically the Lock parameter, which prevents workers from changing your settings). Note: As TEQD is a generic model prefix used by several OEM manufacturers (e.g., RKC, Autonics clones, or Chinese industrial controllers), specific terminal numbering may vary by 1-2 pins. Always cross-reference the physical silk-screen on the plastic housing with the manual diagram.