Mill Invisible Smart WiFi Panel Heater – A smart, elegant, and efficient heater. Easy to install yourself.
The award-winning Mill Invisible Smart WiFi Panel Heater combines cutting-edge smart heating technology with clean Scandinavian design lines. With its elegant curved front panel, it blends seamlessly into any space – a discreet yet powerful heat source that complements your interior.


Energy-efficient comfort
This new-generation heater is the ideal plug-and-play alternative or supplement to central heating. Surprisingly energy efficient, it provides pleasant warmth that evenly heats the room without unnecessary energy consumption. It operates quietly and efficiently, creating a peaceful and harmonious atmosphere – perfect for bedrooms, living rooms, or bathrooms (IPX4).
The heater is designed with safety and family use in mind, maintaining a low surface temperature that makes it safe for children and pets. Its ultra-thin profile is discreet, yet delivers impressive performance – it is also safe to use at night or when you are away.


Mill’s smart features include:
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Mill Predictive Heating™ – learns your home’s habits and starts heating in time to ensure the space is always ready.
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Mill PID Wattage Tech™ – optimizes the heater’s power for stable temperature and lower energy consumption.
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Wattage Cap – allows you to set the maximum power to prevent excessive consumption.
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Open Window Detection – automatically pauses heating when there is a sudden drop in temperature.
These innovations ensure optimal comfort with up to 30% energy savings compared to conventional heaters.
Connectable and future-proof
Mill is designed to connect seamlessly with your smart home. It supports:
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Matter (Google Home, Amazon Alexa, Apple HomeKit)
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Zigbee 3.0
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Homey
It is one of the most advanced smart heating solutions on the market.
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Designed in Norway
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5-year warranty
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Smart, safe, and aesthetically pleasing
Mill Invisible – The smart way to heat your home efficiently and elegantly.
Specifications
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Model: PA400WIFI4
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Power: 400 W
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Recommended room size: 4–6 m²
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WiFi + Zigbee 3.0 + Mill App
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Compatible with Matter
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LED display
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Designed in Norway
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Warranty: 5 years
Features
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Heater: X-aluminum – high efficiency, low surface temperature; safe for children and pets
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Fast and even heating of the room
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Automatic energy regulation – energy savings of up to 30%
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Temperature and consumption control via the Mill app
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Eco mode: power limitation
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Mill PID Wattage Tech™
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Mill Predictive Heating™
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Open window function
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Quiet operation
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Elegant, minimalist Scandinavian design
Safety and installation
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Easy DIY installation
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Brackets and screws included
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Cable length: 130 cm (on the right side)
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Safe to use at night or when you’re away
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Approved for use in bathrooms: IPX4
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Overheating protection
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Child protection
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Commercial lock
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Color: white
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Dimensions (L × H × D): 49.2 × 38.4 × 8.6 cm
Connectivity
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Easy connection to WiFi via Bluetooth 5.2
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Supports WiFi 2.4 Ghz (WiFi 6) and Zigbee 3.0
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Integrations: Matter (Google Home, Apple Home, Amazon Alexa), Homey, Tibber
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Local REST API
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Open API
Official manufacturer website: https://millnorway.com/product/mill-glass-wifi-panel-heater-400w/
EAN: 7090019825308
Jamstvo: 60 mjeseci
