BTicino Light Now 4-button switch

Execution: without thermostat

Stylish BTicino switch with integrated Qbus intelligence
Direct connection to the Qbus two-wire bus
Each button features a configurable RGB status LED
Second page available for additional functionality
Available with or without built-in temperature sensor
Offered in 3 colour finishes and with 1-, 2-, or 4-button configuration

Technical info

The new BTicino Light Now® 4-button switch with integrated Qbus technology (without cover) features four configurable push buttons, each with individual RGB LED feedback.
The SWC04T model also includes a built-in temperature sensor. Both versions support extended functionalities and can be completed with button caps of your choice from the BTicino Light Now® range.

Frequently Asked Questions

How do you read an existing configuration?
This is a completely different procedure depending on the type of controller.
For the CTD controllers this goes as follows:
In the SMIII via "File" or "Utilities / Setup / SD card", click on "Recover QDB from SD".
After confirmation you choose the name and location where the file should be saved. The zipped QDB file is then read from the SD card of the CTD and saved. With a positive answer to the question "Unzip and open restored QDB?", All data will then be immediately available. If the data you were still working on was not sent or saved, you will first receive a notification to do so.

For a CTL controller follow the following procedure:
Because this controller does not yet have a large memory, only limited data can be recovered. Ao the names are abbreviated to 12 characters and serial numbers are not stored anywhere.
The first step is therefore to type in ALL serial numbers via SMII via "File / Modules". These 6-digit serial numbers can be found on every module (DIN rail, switch, detector, etc.). For the SWC0x switches, an extra option was provided to have them send their serial number via “Search for modules”.
When you then click on the "down arrow", you can read all this limited information.
Switching of an output via one or more detectors AND via a push button.

Since a detector will always communicate the exact status of its detection to the configured output, it is not possible to use this same output on multiple modules.
If you want to switch an output via a detector AND via a push button, you must link them through a logic expression.
For example:
IF ( #Hall Detector1 = On
OR #Hall Detector2 = On
OR _Hall Push Button = On )
THEN Hall Lamp = On ELSE = Off

You can find a sample configuration at the following link: Detector_And_Manual.QDB
When uploading the data, a module always displays Err.255 (Module not found)
If Err.255 appears during the programming or verification of a module, this can have several causes:
First, verify whether the serial number was correctly entered as shown on the sticker on the module or its packaging. A serial number always consists of 6 digits or 10 hexadecimal characters (e.g., 0006B01ADE), with the first 4 determining the module type.
Conduct a test through “Utilities/Communication Check”. Enter the last 6 digits of the serial number here and click on “Start Module Test”. If communication with this module is perfect, you should see a nice flat line at 100%. If you see a flat low line, there is no communication. If the line is pulsed, communication is poor. Check whether the bus voltage (+/- 14V) is still correctly reaching the module or check the wiring. Try communicating with the module directly at the controller with 2 short bus wires (without any other connected module) before returning it via our RMA procedure.
Several modules can transmit their serial number:
All SWC variants can be searched via “File/Modules/Search for modules”. After clicking “Start search”, all connected switches will blink blue. Pressing any key on the switch will transmit its serial number.
All modules with a 10-character serial number can be read via “Utilities/Communication Check” if 1 and only 1 module of this new type is connected to the bus, by entering “FFFFFF” as a serial number.

Technical info for installers

Function description

The smart switches SWC04/YNB and SWC04T/YNB are basic elements to be finished with appropriate buttons in the BTicino Light Now series and contain 4 push buttons, each with an adjustable RGB LED, and are mounted in a BTicino Light Now® mounting frame. These switches can be finished with interchangeable BTicino Light Now® buttons in white, stone, or black. The SWC04T/YNB is equipped with a built-in digital temperature sensor.
Each SWC04/YNB or SWC04T/YNB is equipped with a bus connector with a detachable flexible connection cable. The two-wire bus connected to the bus connector provides the smart switch with power supply and control. For the connection, the polarity of the bus does not matter. The switch can be finished with a single or dual button with either 1 or 2 functions. You can select the executed finish in the configuration software System Manager III.
When both lower or both upper buttons are pressed simultaneously, a second page becomes visible by changing the color of the LEDs, where four push buttons are again available. In total, one SWC04/YNB or SWC04T/YNB can directly control 8 standard I/Os, 16 scenes, and via the sequencer control 8 times 20 of the potentially available 100 scenes.
The SWC04/YNB, like every Qbus module, has a unique serial number that is entered during configuration in the configuration software System Manager III. The switch can also be registered via the "Search for modules" function in SMIII. All programmed data remains internally stored in permanent memory.
Each LED provides feedback on the status of the assigned I/O to that button. When the assigned I/O is not active, the LED will be dim (or not lit); this can be specified in the Qbus configuration software. The color of the LED, the brightness, and whether or not the LEDs flash together on the second page of the switch can also be specified through the software.
The switch can also interactively provide feedback on a specific event. Both the function of the push button and the color of the LEDs can temporarily change. For example, the LEDs can blink red and all push buttons become inoperable in the case of a burglar alarm, the LEDs flash when the doorbell rings, etc.
Technical Data
General Specifications:
Power supply: bus connection
Maximum humidity: 93%, no moisture condensation
Qbus Bus: 13.8Vdc - 18Vdc very low safety voltage
Maximum humidity level: 93%, no condensation
Peak load: 15mA at nominal voltage 13.8V.
Max. mounting height: 2,000 meters above sea level
Functions:
4 push buttons and 4 RGB LEDs (up to 8 functions via 2nd page).
Directly connectable to the two-wire bus, no polarity.
Physical Specifications:
Housing: Plastic
Non-toxic, in compliance with WEEE/RoHS
Protection grade: IP20, EN 60529
Dimensions (HxW): 45mm x 68mm
Weight: approximately 45g
Electrical Safety:
Qbus Bus: 13.8Vdc - 18Vdc very low safety voltage
In compliance with EN 60950 – 1:2006
Overvoltage CAT. III (CAT.3)
CE:
In compliance with EMC and low voltage regulations.
Qbus declares that this product complies with all applicable European directives and regulations.
The EU declaration of conformity is available upon request.
Sizing
Explanation of symbols

Equipment where protection against the risk of electric contact is not only based on basic insulation but also on additional protection such as double insulation or reinforced insulation. There is no possibility for grounding.

Before connecting the device, it is mandatory to read the manual of the respective product. ISO7000-0434

Power supply connection (230V) to the power supply connector. IEC 60417-5036

CE conformity. All declarations of conformity are available upon request.
Warranty Provision

Standard Warranty Period: 2 years from delivery date.
The warranty is no longer valid if the module has been opened!
Defective modules should be sent without seal along with a description of the defect to our service department:
QBUS N.V.
Joseph Cardijnstraat 19
9420 Erpe-Mere
Belgium
T +32 53 60 72 10
F +32 53 60 72 19
Email: support@qbus.be

General

Safety Regulations
Read the full manual before installing and activating the module.
CAUTION
The smart switch must be installed, commissioned, and maintained by a certified electrical installer in accordance with the applicable legal regulations of the country.
The smart switch can be used for permanent installation in dry indoor locations with flush-mount frames.
The smart switch must not be installed in the same junction box with 230V modules.
The switch must not be opened or tampered with. The warranty is void if the switch is opened!
Pay attention to the mounting direction! Both the switch and the components of the keys have an arrow that must point upwards.

Install and wire

Installation

Click the BTicino Light Now® switch into a suitable BTicino Light Now® mounting frame for at least 2 modules. Ensure that the latches click securely into place, and that the visible arrow on the front of the switch points upward. The arrow on the included rocker mechanism of the BTicino Light Now® key must also point upward.
Power Supply

Connect the bus cable to the back of the SWC06(T)
BUS connection

It is recommended to use the Qbus cable or any other cable with a minimum of 2 conductors of 1mm² as the bus cable. The green shielded EIB cable can also be used if the conductors are paired to achieve a minimum cross-section of 2 x 1mm².
2nd page

The second page can only be accessed if it has been configured. Press two bottom or two top buttons simultaneously. The page change is indicated by flashing LEDs. A different color of the LEDs (adjustable via the configuration software) shows the active page. The switch automatically returns to the first page after a few seconds of no operations on the second page.

BTicino Light Now Key Covers

BTicino Light Now 1 function key cover

Module width	Colour	Symbol	Order code
1	White	Without symbol	YW4915MH
2	White	Without symbol	YW4915MH2
1	Stone	Without symbol	YG4915MH
2	Stone	Without symbol	YG4915MH2
1	Dark	Without symbol	YD4915MH
2	Dark	Without symbol	YD4915MH2

Add letters to the order code for the desired symbol:

Dimmer AD

Stop AE (available only as a 1-module key!)

Lamp B

Key F

Doorbell D

Examples:
White single key with lamp: YW4915MHB

Dark 2M key with Key: YG4915MH2F

BTicino Light Now button 2 functions key cover

Module breedte	Kleur	Symbool	Bestelcode
1	White	Without symbol	YW4911MH
2	White	Without symbol	YW4911MH2
1	Stone	Without symbol	YG4911MH
2	Stone	Without symbol	YG4911MH2
1	Dark	Without symbol	YD4911MH
2	Dark	Without symbol	YD4911MH2

Add letters to the order code for the desired symbols:

2 Dimmers AD

On – Off AG

Up – Down AH

1 Dimmer 2T AI

Scenes Welcome / All Off AJ

Scenes Day / Night AL

Numbers / Scenes 1-2 AM

Numbers / Scenes 3-4 AN

Examples:
White single button with Scenes Welcome / All Off: YW4911MHAJ

Stone 2M button with On – Off: YG4911MH2AG

Each modules has an unique serial number. By this number the System Manager recognizes the modules.

This is completely explained in our knowledge center.

Button layout

After entering the serial number, creating it from the Wizard, or scanning via "Search for Modules," you must first select the key combination to be used on this module. Qbus supports all combinations of single and double keys with double LEDs or with a single LED at the bottom of a key.
The following selection screen appears:

Double-click the desired key combination to use it.

Basic settings
The switch is essentially the user interface of the system. As with a conventional switch, its operation is very simple.
Each switch can perform 4 + 4, so a maximum of 8 operations. These operations are simple toggles (ON/OFF), dimming, scene recall, central commands, and anything the system can handle.
(PS.: This is also limited to 8 for the SWC06/YNB variants. An intelligent switch with 5 keys on the first page can use an additional 3 keys on the second page, and one with 6 keys on the first page can use an additional 2 keys on the second page.)

To program a switch, follow this procedure:
When you have entered the serial number of a switch as mentionedin our knowledge center, you will see the following screen appear:

It is important that you set the correct type for the Tastu switches. In the drop-down list you can choose from SWC01/G, SWC02/G, SWC04/G or, if equipped with a temperature sensor, SWC02T/G or SWC04T/G
The screen above is the programming screen of a switch, showing the 4 commands for the switch. These commands are placed so that the top left field (Key 1) corresponds to the top left of the switch when you are in front of the switch, etc.
Remark: You can verify that the position of the switch is correct by making sure that the serial number on the back of the switch is legible (not upside down).
To program the switch, click the drop-down box next to the first key; there you can select I/O’s that you have already created, or create a new I/O. Look at our knowledge center for creating I/O’s.
In the drop-down box below the I/O selection window, you can select the mode of the new I/O you want to create. If you have selected an existing I/O, the mode will already be indicated in that box. Look at our knowledge center for a description of the various I/O types you can select.

As you can see on the screen below, for each key you can choose the color of the standby LED (off color), as well as the color for the operating state (on color), or even disable all colors completely, with the option above each color.
It is recommended to use different colors for different I/O’s - e.g. blue for on/off, yellow for dimmers, green for scenes etc. This will make your system easier to use.

The UP/DOWN and TEST keys on each key next to the I/O allow you to verify that the selected I/O is operational and that it is indeed the one we want to illuminate on the key in question for this particular switch.
The properties option takes you to the I/O properties for this key. see Properties for more details.
As mentioned earlier, these switches have the capacity for 4+4 operations. The other 4 operations can be found on page 2, in the upper part of the window. When you go to this page, an identical screen is displayed with the four keys. The configuration method is exactly the same.

ATTENTION!!:
Switching between the pages is done by pressing 2 keys simultaneously. If you are using BTicino switches: Press the two upper or lower buttons of the switch simultaneously. If you use switches from Niko or the glass switches (Tastu): press the two keys on the left side or the two keys on the right side of the switch. Once this is done, the 4 keys on the 2nd page will be activated. The selection of the 2nd page takes 5 seconds, then the switch returns to the first page. You may want to use the second page of a switch for I/O’s that you do not activate regularly (e.g. shutters).
Additional settings
With this option the following screen appears.
Standard colors for this SWC0x:

This option allows you to set the standby and operating colors for all LEDs on pages 1 and 2.
If you click on “Use these colors as default”, the chosen colors will now be used as default. So all switches set to - Default - will use these new colors.
Clicking "Make this default for ALL SWC0x" will set these colors as default AND will also be assigned to all switches under this project.
If you want a different standard colour for each kind of I/O, the option “Colours / Mode” can be checked.
In next screen you can set the default colour/page or a specific colour for I/O’s of type On/Off, Dimmer, Shutter, Other or Scene. When data is sent to the switches, default colours will be sent depending on these settings.
Low light
With this option the brightness of the LEDs at the OFF position can be adjusted by moving the bar left/right (position 2-10 is recommended).

With the “Short Flash on Page 2” option, when you use the 2nd page of the switch commands, the LEDs will flash to indicate that you are on page 2.

The option “TH status visible on LEDs” will reduce the brightness of the LED of the thermostat I/O when the requested temperature has been reached.

Finally, you will be given the opportunity to select the colors of your choice and use them for the LEDs.
Alarms

Qbus has an option to send warnings when certain situations occur.
An 'Alarm' can blink the leds, block the inputs, change color or intensity of the leds on intelligent switches.

An SWC can proces up to 8 alarms. They are shown in the list on the left side. In the list on the right side you can see all available alarms.
When an alarm is activated, the intelligent switch wil executed the settings as setup in 'Properties'.
One alarm can execute different actions on multiple intelligent switches.
The default settings of an alarm and an explanation of all alarm functions can be found in our knowledge center.