FRITZ!DECT 440 - Thermostat AVM - Free user manual and instructions

Product type	Connected thermostat (temperature and humidity sensor)
Brand	AVM
Model	FRITZ!DECT 440
Dimensions (L x H x D)	69 x 69 x 18 mm
Weight	75 g
Power supply	2 AAA batteries (non-rechargeable, alkaline)
Radio standard	DECT-ULE
Frequency range	1880 – 1900 MHz
Range (indoor)	Up to 40 m
Max. transmission power	250 mW
Operating temperature	10 °C to 40 °C
Operating humidity	Dry indoor, no condensation
Display	Temperature and relative humidity (RH)
Main functions	Control of smart home devices (thermostats, bulbs, sockets), guest Wi-Fi activation, answering machine, scenarios, temperature/humidity measurement
Registration on FRITZ!Box	Via Menu button and Connect/DECT button on FRITZ!Box
Configuration	Web interface http://fritz.box, menu Home Automation > Devices and Groups
Mounting	Wall mounting (screws or adhesive patch provided)
Maintenance and cleaning	Damp cloth, no liquid, no abrasive products
Safety	Magnets on the back: avoid contact with pacemakers, magnetic cards; batteries: observe polarity, do not mix, remove empty batteries, use recommended batteries
Recommended batteries	Varta Industrial Pro AAA, Varta Longlife Max Power AAA, GP Super Alkaline LR03, Duracell Industrial AAA (no zinc-carbon batteries)

Frequently Asked Questions - FRITZ!DECT 440 AVM

How to register the FRITZ!DECT 440 on my FRITZ!Box?

Press the Menu button on the FRITZ!DECT 440 to start registration. Then press the Connect button on your FRITZ!Box or press and hold the DECT button for 6 seconds. The connection icon appears if registration is successful.

Which smart home devices can I control with the FRITZ!DECT 440?

You can control radiator thermostats (FRITZ!DECT 300/301/302), connected bulbs (FRITZ!DECT 500), and connected sockets (FRITZ!DECT 200/210). You can also create scenarios and routines from the FRITZ!Box interface.

How to configure the display buttons of the FRITZ!DECT 440?

In the FRITZ!Box interface (http://fritz.box), go to Home Automation > Devices and Groups, click on the checkmark next to your FRITZ!DECT 440, then in the Button assignment section, click + in an empty display and select the desired function or device.

Can I use rechargeable batteries in the FRITZ!DECT 440?

No, do not use rechargeable batteries. Recommended batteries are non-rechargeable AAA alkaline batteries such as Varta Industrial Pro, Duracell Industrial, etc. Using rechargeable batteries may lead to incorrect battery life estimation and warnings.

How to change the batteries of the FRITZ!DECT 440?

Remove the FRITZ!DECT 440 from the wall mount. Press the unlocking mechanism on the back to remove the back plate. Replace empty batteries with new AAA batteries, observing polarity. Close the plate and remount.

What to do if the screen shows 'Battery low'?

Replace the batteries as soon as possible following the procedure above. Use quality alkaline batteries. If the problem persists, check that the batteries are properly inserted and not expired.

How to reset the FRITZ!DECT 440?

Press and hold the Menu button for 2 seconds to access the menu. Navigate to Reset and confirm. Factory settings are restored. The device remains listed in the FRITZ!Box interface; delete it manually if necessary.

What is the range of the FRITZ!DECT 440?

The range can reach 40 meters indoors (depending on obstacles). If the connection is unstable, reduce the distance to the FRITZ!Box or install a FRITZ!DECT Repeater 100.

Can the FRITZ!DECT 440 be used outdoors?

No, the device is designed for indoor use only, in a dry and dust-free place. Do not expose it to humidity or liquids.

What to do if the displayed humidity is too low or too high?

Ideal humidity is between 40 and 60%. If the value is outside, ventilate the room or use a humidifier/dehumidifier. The FRITZ!DECT 440 measures humidity but does not regulate it.

USER MANUAL FRITZ!DECT 440 AVM

Installation and Operation

DEUTSCH 3

ENGLISH 15

FRANÇAIS 27

ESPAÑOL 39

ITALIANO 51

NEDERLANDS 63

Lieferumfang

Gray square button with a red downward arrow, no text or symbols present

3D rendered image of a gray rectangular device with a white central cutout and red directional arrows indicating motion (no text or symbols)

Diagram of a device with two cylindrical components and internal components, no visible text or symbols

Zurücksetzen

Illustration Number and Name

	1 FRITZ!DECT 440
	1 Wall mount
	1 Adhesive strip
	2 AA batteries (installed)
	2 Screws and dowels

no illustration 1 Booklet

Safety instructions

Explosion hazard! Injuries caused by explosion or burns through inappropriate handling of the batteries. Do not attempt to load, short-circuit, or disassemble the batteries!

- Do not use rechargeable batteries!

Rechargeable batteries usually have a higher internal resistance and often supply lower voltages. This can result in an incorrect estimation of battery life, reduced service life and erroneous battery warnings.

- Use high-quality batteries!

Varta Industrial Pro AAA, Varta Longlife Max Power AAA, GP Super Alkaline LR03, or Duracell Industrial AAA are suitable. Zinc carbon batteries are not suitable for operating FRITZ!DECT 440!

• Make sure that the batteries are inserted with the poles in the correct position!

- Remove dead batteries from FRITZ!DECT 440 as soon as possible.

- Do not mix used and new batteries.

- Keep batteries away from children and avoid contact with skin, eyes, and mucuous membranes. Should you come in contact with battery acid, rinse immediately with clear water and consult a doctor.

- Only use FRITZ!DECT 440 indoors.

- Operate FRITZ!DECT 440 in a dry place that is free of dust.

- Do not expose FRITZ!DECT 440 to contact with liquids.

- Clean the device using a moist cloth.

- FRITZ!DECT 440 has magnets on the back. Avoid contact with pacemakers, magnetic stripe cards, and magnetic data storage media.

Overview of Devices

1. Buttons (assignable)
2. Screen with temperature, humidity, and connection display
3. Menu button with LED

Prerequisite	FRITZ!Box with DECT and FRITZ!OS 7.50 or newer
Function	Operating Smart Home devices•Radiator controls (FRITZ!DECT 300/301/302)•LED lights and smart plugs (FRITZ!DECT 500/210/200)•Scenes and templates
	Display temperature and humidity
	Switch Wi-Fi guest access on/off
	Switch answering machine on/off

Register

1. Press the Menü button to start registration.

2. Press the Connect button on your FRITZ!Box

or

Press the DECT button on your FRITZ!- Box and hold it down for 6 seconds.

1. If registration was successful, the symbol appears.

FRITZ!DECT 440 is ready for operation and can be configured.

Install

Screw Stick

Menu

Use the Menu button to switch between displays or to open the menu.

Switch displays	Press theMenübutton.FRITZ!DECT has 4 displays. One display for the temperature and 3 displays you can configure freely.
Open the menu	Press theMenübutton and hold it down for 2 seconds.In the menu you can rest FRITZ!DECT 440, start registration, or open information on the version.

Connect again

If you would like to reconnect FRITZ!DECT 440 or register it with another FRITZ!Box, proceed as follows:

1. Press the Menü button and hold it down for 2 seconds.
2. Press the button with the Anmeldung (Register) display.
3. Press the Connect button on your FRITZ!Box

or

Press the DECT button on your FRITZ!Box and hold it down for 6 seconds.

The connection will be established.

Configure

1. Open a web browser and enter http://fritz.box.
   The FRITZ!Box user interface appears.
2. Open the Smart Home > Devices and Groups menu.
3. Click on 📋 behind your FRITZ!DECT 440.
4. Under Button Assignments, click on + in an empty display.
5. Select the Smart Home devices or function you would like to operate.
6. Click on Next and follow the wizard's instructions.

http://fritz.box

Change Batteries

1. Remove FRITZ!DECT 440 from the wall mount.
2. Press the button on the back of FRITZ!-DECT 440 to open it.
3. Remove the back panel.
4. Replace the dead batteries with new batteries. Please note the "Safety instructions" on page 16.

Gray square button with a red downward arrow, no text or symbols present

3D rendered image of a gray square device with a white vent and red directional arrows indicating rotation (no text or symbols)

Diagram of a device with two cylindrical components and internal components, no visible text or symbols

Reset

If you would like to reconnect FRITZ!DECT 440 or register it with another FRITZ!Box, proceed as follows:

1. Press the Menü button and hold it down for 2 seconds.
2. Press the button with the Reset display.

The factory settings are restored to FRITZ!DECT 440.

After resetting, FRITZ!DECT 440 still appears in the FRITZ!Box user interface under Smart Home > Devices and Groups. Delete FRITZ!DECT 440 there manually if desired; see „Log Off“.

Log Off

1. Open a web browser and enter http://fritz.box.
   The FRITZ!Box user interface appears.
2. Open the Smart Home > Devices and Groups menu.
3. Click on Delete Device.

appears behind your FRITZ!DECT 440.

1. Click on 📋 to delete FRITZ!DECT 440.

FRITZ!DECT 440 is deregistered from the FRITZ!Box.

Help

Display Cause Solution

	Battery nearly dead “Change Batteries” on page 22
	Connection to the FRITZ!Box is disrupted	Reduce the distance to the FRITZ!Box or use it as a FRITZ!DECT Repeater 100.
	Humidity too low or too high	For an optimum room climate, make sure that the humidity is between 40 and 60%.

EU Declaration of Conformity

AVM declares herewith that the device is compliant with directive 2014/53/EU. The full text of the declaration of EU conformity is available at

https://en.avm.de/service/declarations.

CE

Technical Specifications

Dimensions (W x H x D)	69 x 69 x 18 mm
Weight	75 g
Battery operation	2 x AAA batteries
Wi-Fi standard	DECT ULE
Frequency range	1880 – 1900 MHz
Range	up to 40 m (indoors)
Transmitter power (max.)	250 mW
Operating temperature	10 – 40 °C (not in damp locations)

Contenu du pack

Gray square button with a red downward arrow, no text or symbols present.

3D rendered image of a gray square device with a white vent and red directional arrows indicating rotation (no text or symbols)

Diagram of a device with two cylindrical components and internal components, no visible text or symbols

Réinitialisation

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3D rendered image of a gray square device with a white vent and red directional arrows indicating rotation (no text or symbols)

Diagram of a device with two cylindrical components and internal components, no visible text or symbols

Restablecer

Gray square button with a red downward arrow, no text or symbols present.

3D rendered image of a gray square electronic device with a white vent and red directional arrows (no text or symbols)

Diagram of a mechanical component with two cylindrical parts and internal channels, no visible text or symbols

Ripristino

Gray square button with a red downward arrow, no text or symbols present.

3D rendered image of a gray square button with a white vent and red directional arrows (no text or symbols)

Diagram of a mechanical component with two cylindrical parts and internal channels, no visible text or symbols

Terugzetten