Zn-401s Manual !!top!! – Proven

Sensor Input: For Thermocouples, ensure correct polarity (Red is usually negative in many standards). For Pt100 RTDs, connect the three wires to the designated resistance terminals to compensate for lead length. Control Output: Relay: Use for motorized valves or contactors. SSR: Use for high-frequency switching in electric heaters.

Your controller has a higher-level lock. Try LCK=1111 or LCK=808 . Check the "Security" section in your downloaded manual. zn-401s manual

Manually turn on the device you want to control (TV, VCR, or DVD). Press and hold the CODE SEARCH button until the indicator light stays on, then release it. SSR: Use for high-frequency switching in electric heaters

If you meant a different type of ZN-401S (e.g., a scale, battery charger, or CNC component), please provide the product category for a more accurate feature. Check the "Security" section in your downloaded manual

Note: If your device does not match any of the above, double-check the rear label. Some manufacturers reuse model numbers across different product lines.