RET-99-S-24V ▪︎ Multi-Function PID Temperature Controller (24V)

NOTICE: This is a legacy product provided for backup purposes only. For new projects, please review similar models.

Description: RET-99-S-24V is a 24V AC/DC powered PID-based digital temperature controller. With its dual display, it shows both the current temperature and the setpoint simultaneously. It offers advanced control via auto PID tuning and selectable alarm or SSR output.

Input Types: FeConst, NiCrNi, CuConst, Pt10RhPt, Pt13RhPt, Pt100

Control Output: 1 x Relay (3A / 250VAC NO/NC)

Alarm Output: 1 or 2 x Relay (3A / 250VAC)

[SET VALUE ADJUSTMENT]

Press the SET button briefly to enter set mode. The dot in the upper left will blink. Adjust the value with “+” or “−”.

[PARAMETER ACCESS]

Hold the SET button for 4 seconds to see “E n G c”. Enter “11” to access all parameters. Scroll with ↑ / ↓, confirm with P.

[INSTALLATION & SAFETY]

Before powering on, ensure voltage and humidity are within limits. Do not overload relay outputs. Use external protection if needed.

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