APPLIANCES
Appliance sound has two jobs: tell the user something finished, and stay off the EU noise label. ZEH builds panel speakers and fascia-integrated sounders in our own molding and driver plants — tuned against the machine’s own IEC 60704 noise curve, not a datasheet.
ZEH tooling roots reach back to 1998, so the fascia, the grille slots and the speaker inside arrive as one engineering decision — not three suppliers blaming each other.
Oven, hood and hob end-of-program tones — narrow-band sounders that stay audible over extractor noise.
End-of-cycle chimes and door-lock alerts for washers, dryers and dishwashers, rated for humid cavities.
Filter-clean and fault alerts routed through slim panel speakers in the fascia.
Door-open alarms, timer beeps and status tones in compact sealed enclosures.
ZEH designs against your machine’s measured noise curve — we read the IEC 60704 spectrum, then place the chime where the machine is quietest and pick a band with presence (roughly 2–4 kHz) so the end-of-cycle tone cuts through a 1,400 rpm spin.
Buzz is a mechanical problem, not an electrical one. Our fascia, grille slots, gasket and speaker are moulded and assembled in one plant, so resonance is engineered out before the first sample — not glued over after it.
Panel speakers are chosen so the appliance stays within its declared LWA value. We supply EN 60704-aligned component data your test lab can fold into the energy-label declaration and EPREL filing.
Since the 2021 energy-label revision, washing machines, dryers, dishwashers, fridges and hoods must declare noise on the label, tested per EN/IEC 60704 and registered in EPREL. Every dB you add with a bad sounder is now printed on the sticker — and checked in market surveillance.
You send the machine’s noise spectrum or we plan a quick IEC 60704-style measurement; we mark the quiet band and target SPL.
Our mold shop cuts the grille and pocket into your fascia tool; the driver is sized to the cavity, gasket included.
First articles assembled on our line, swept 100%, curves and audibility check sent with the box.
Spot-check data per batch keeps the declared noise value stable for EPREL surveillance.
major appliances produced worldwide in 2025 (Euromonitor estimate)
of appliance launches now market a smart or connected feature — all of them need UI sound
typical EU noise ceiling at 1 m that added sounders must respect
Public figures checked November 2026 — orientation, not investment research.
Enter the appliance’s ambient noise at the panel and the sounder’s SPL and band — check audibility against the ISO 7731-style margin engineers use.
ZEH returns a speaker proposal with mounting notes, moulding suggestions and an EN 60704-aligned data sheet within days.
