Knowledge base
Controller FAQ
Answers to common questions about temperature controller setup, sensor input types, alarms and output modes.
TCN4 PT100 Decimal Display and Hysteresis Setting Guide
Step-by-step guide to enabling PT100 1-digit decimal display and setting hysteresis (HYS) on the TCN4 temperature controller for stable ON/OFF control.
Read guide FAQ · 2025-05-22What's the Difference Between Zero-Crossing and Random Turn-On Solid State Relays?
This blog explains the core differences between zero-crossing and random turn-on SSRs, including switching behavior, EMI, and application suitability.
Read guide FAQ · 2025-05-21TCN4 Controller: How to Set Input Type to PT100 (Video Tutorial)
This blog shows how to configure a TCN4 temperature controller to accept PT100 RTD input. Includes a video tutorial and step-by-step instructions.
Read guide FAQ · 2025-04-24How to Use the TC3-401T Front Panel for Temperature and Time Control
This blog walks you through the TC3-401T temperature timer controller’s front panel, explaining each function key, dual display mode, and how to adjust temperature and time settings.
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