CONVECTION HEATER MILL PA400WIFI4 400W WIFI GEN 4

The Mill Invisible Smart WiFi panel heater, 4th generation, is a high-tech and energy-efficient heating device with a clean and modern design that fits into any interior. Milli heaters are designed in Norway and feature a minimalist Scandinavian style. Thanks to support for Matter, Zigbee 3.0, and Wi-Fi, it’s one of the most future-proof heaters on the market—ready for your smart home, no matter what platform you use.

In the Milli app, you can control the temperature from anywhere and monitor energy consumption in real time. The weekly schedule automatically adjusts the temperature to your daily habits, providing optimal comfort while preventing excessive energy consumption when you’re away or asleep. The heater features Mill Predictive Heating™ and Mill PID Wattage Tech™ technologies, which use machine learning and precise power control to maintain a stable temperature with low energy consumption. This ensures an energy-efficient and comfortable heating experience that adapts to your habits and the room’s needs. The elegant, rounded front panel and slim design blend seamlessly into the wall. The panel heater provides pleasant warmth, operates silently, maintains a low surface temperature, is safe to leave unattended, and its IPX4 rating allows for use in the bathroom.

Features and Specifications
Model: PA400WIFI4
Power: 400W
Recommended room size: 4–6 m²
WiFi + Zigbee 3.0 + Mill app
LED display for
easy use Designed in

Norway Technical features:
Heating element: X-aluminum – high efficiency, low surface temperature (max 71 °C)
Fast and even heat distribution throughout the room
Low-energy consumption control
: Mill PID Wattage Tech™
, Mill Predictive Heating™
Open-window function
Quiet operation
Safety and installation
Easy to install
yourself Wall mounting bracket and screws included
Cord length: 130 cm, on the right side
Safe to leave unattended
Suitable for bathroom use (IPX4)
Overheating
protection Child safety lock
Commercial lock (Commercial Lock)
Color: white
Dimensions (W x H x D cm): 49.2 x 38.4 x 8.6

Connectivity:
Easy connection to a Wi-Fi network via
Bluetooth 5.2 Connectivity: Wi-Fi 2.4 GHz (Wi-Fi 6), Zigbee 3.0
Integrations: Matter (Google Home, Apple Home, Amazon Alexa, etc.), Homey, Tibber

Benefits:
Mill PID Wattage Tech™
The first panel heater with PID control technology. Once the desired temperature is reached, the device maintains it by reducing power—resulting in more stable heat and fewer temperature fluctuations.
Mill Predictive Heating™
A learning technology that takes into account how quickly a room heats up or cools down and starts heating at the right time so that the temperature reaches the desired level exactly as planned.
Easy Connection
via Bluetooth: The device automatically connects to your Wi-Fi network, regardless of your router type.
Quiet Operation
: The panel heater operates silently—you won’t hear any clicking sounds when the temperature changes.
Child Safety
Lock: In the Mill app, you can activate a child lock that blocks all buttons on the device.
Commercial
Lock: Gives landlords control over temperature and energy consumption via the Mill app.
The world’s first Matter-enabled panel heater
: Mill’s 4th-generation WiFi panel heaters support Matter, allowing you to control the temperature in the same app alongside other smart home devices. In addition, voice control is available (Amazon Alexa, Apple Home, Google Home).
All Mill WiFi devices (except Gen 1) can also be controlled via Homey.