Track order
Free support
Exclusive discounts
Secure payments
Couldn't load pickup availability
Not sure which device fits your project? Our team speaks KNX. Contact us for a free technical recommendation.
Got questions?
Feel free to get in touch
Ask an expert!
The Eelectron BKT4FX-0030 is the 4-key button kit in FENIX Bianco Alaska 0030 for the OL-U KNX thermostat TO04A01KNX and the HO04A01KNX humidistat. Those devices ship as bare hardware, so this kit plus a PO71 cover frame and an FO71A01 metal mounting frame is what turns them into a finished wall control. The four keys sit beside the backlit LCD and usually carry setpoint, mode and fan commands, or any other KNX function assigned in ETS.
The finish is FENIX NTM® Bianco Alaska 0030 (a warm, matte Alaska white): the FENIX NTM® nanotech laminate of the OL-U FENIX Edition — very low light reflectivity, soft-touch matte, anti-fingerprint — specified for hospitality and high-end residential work. Pair it with the PO71 FENIX frame in the same colour code.
| Type | Key set (button kit) for OL-U KNX wall devices |
| Keys / layout | 4 keys for TO04A01KNX / HO04A01KNX |
| Finish / colour | FENIX NTM® Bianco Alaska 0030 (a warm, matte Alaska white) |
| Material | FENIX NTM® matte laminate |
| Compatible hardware | TO04A01KNX thermostat or HO04A01KNX humidistat |
| Compatible cover frames | PO71A01xx, PO71A03xx, PO71A71 / A55 / A45 / A60 doubles |
| Device footprint | 71 x 71 mm (2.80 x 2.80 in) OL-U front |
| Weight (net, packed) | 0.13 kg (0.29 lb) |
| Manufacturer part no. / GTIN | BKT4FX-0030 / 8054144524320 |
Fits TO04A01KNX and HO04A01KNX. Other finishes: BKT4FX-0032, BKT4FX-0720, BKT4FX-0724, BKT4FX-0748, BKT4FX-0754, BKT4MT-SH, BKT4PLL-1, BKT4PLL-3, BKT4PLL-4. Complete with FO71A01-2M / -3M mounting frame and matching cover frame (PO71A01FX-0030 / PO71A03FX-0030).
Passive accessory – no electrical rating. The OL-U KNX hardware it mounts on is 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.
Most in-stock orders ship within 1–2 business days from Miami, FL. Delivery typically takes 3–5 business days depending on destination.
For freight or oversized orders, our team will contact you with a custom quote.
All KNXSupply products are covered by the manufacturer's warranty, ranging from 1 to 3 years depending on the brand. Warranty terms are fulfilled directly by the manufacturer.
If you experience any issue, contact us and we'll coordinate the claim process on your behalf.