Eelectron HO04A01KNX KNX Hygrostat 4-way, 3-module

The Eelectron HO04A01KNX is the regular OL-U KNX thermostat/humidistat hardware: a wall-mounted room controller for 2- or 3-module flush boxes with an integrated temperature sensor and a relative-humidity sensor, two independent 2-stage PI thermostats, a backlit LCD, four mechanical pushbuttons configured as 8 channels with an RGB LED each, and a capacitive swipe bar with an RGB LED bar. It is the design-grade room controller of the OL-U range for hotel guest rooms, residences and executive offices, finished with button kits and frames in painted plastic, metal or FENIX that are ordered separately.

Each thermostat drives heating, cooling, valves, 6-way valves and 2-/4-pipe fan coils, so two zones (bedroom and bathroom, office and meeting area) are handled from one device; the humidity channel manages humidifiers and dehumidifiers with hysteresis thresholds. The swipe bar takes quick swipes for scenes (Welcome, IN…) and slow swipes for dimming, set-point or colour, plus tap, double-tap and long-press; the 8 button channels cover on/off, dimming, shutters and blinds, scenes and sequences. Thirty-two logic blocks and the Virtual Holder hospitality logic are built into the KNX Data Secure ETS application. The temperature-only version is TO04A01KNX; the LITE version without swipe bar is TO04L02KNX-1 / -3.

Key Features

• Integrated temperature sensor −5…+55 °C, 0.01 °C resolution and relative-humidity sensor 0–100 %RH
• Two independent 2-stage thermostats with PI controllers for heating/cooling, valves, 6-way valves, 2- and 4-pipe fan coils
• Humidity control with thresholds and hysteresis for humidification / dehumidification equipment
• 4 mechanical buttons configured as 8 channels (on/off, dimming, shutters/blinds, scenes, sequences), one RGB LED per button
• Multifunction capacitive swipe bar: quick swipes for scenes, slow swipes for dimming / set-point / colour, single tap, double tap, long press
• Freely configurable RGB LED bar for status or any KNX bus value; LCD display with adjustable backlight and ECO mode
• 32 logic blocks with logical, threshold, algebraic and conditional operators; predefined proportional and dew-point algorithms
• Virtual Holder logic for accurate hotel-room occupancy from door contact + presence sensors
• KNX Data Secure; KNX interface integrated; 600 group addresses / 700 associations
• Fits 2- or 3-module boxes (Italian 502/503, German, British, Swiss); bus terminal and fixing screws supplied
• Button kits BKT4PLL-1 / -3 / -4 (plastic) or metal / FENIX sets and frames FO71A01-2M / -3M ordered separately

Technical Specifications

Related Products

Temperature-only version: TO04A01KNX. LITE thermostat TO04L02KNX-1 / -3; multisensor MO04A01KNX-1 / -3 / -4. Button kits: BKT4PLL-1 (white), BKT4PLL-3 (black), BKT4PLL-4 (Helvetia white), BKT4PL0-1 / -3. Frames FO71A01-2M / FO71A01-3M, FOXXA01-7171 / -7171S; cover plates PO71A01PL-1 / -3 / -4, PO71A03PL-1 / -3, PO71A71PL-1 / -3 / -4, PO71S01PL-1 / -3 / -4; accessories SFBOA17-1 / -3 / -4, SFBOA25-1 / -3 / -4.

CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations.

Datasheet (PDF) · Available to order.

Orders over $500 ship free within the USA (under 50 lbs). Orders under $500 carry a low cost shipping fee.

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