APACHETA smartLEDs S2-P User manual

smartLEDs
© APACHETA SMART SYSTEMS magicstairlighting.com
smartLEDs
S2-P
SMART STAIR LED LIGHTING CONTROLLER
model PREMIUM
USER MANUAL
v5.0.6
Download the full-color version of this manual from magicstairlighting.com, tab DOWNLOADS, where
you will also find a comprehensive guide to installing smart stair LED lighting system.

In accordance with the provisions of the Directive 2012/19/EU on waste electrical and electronic equipment (WEEE) it is
forbidden to place with other waste any waste equipment marked with a crossed-out bin symbol.
The user, wanting to get rid of electronic equipment or services, is obliged to return it to a waste equipment collection point.
Applicable restrictions have been introduced on order to restrict the amount of waste generated from waste electronic
equipment.
This equipment does not contain any hazardous ingredients that may have a particularly negative impact on the environment
and human health.

S2-P User manual v5.0.6
smartLEDs
str. 2/13 © APACHETA Smart Systems
1 DESCRIPTION
S2-P is microprocessor controller for multi-spot 12V/24V LED lighting, intended for LED lighting of
staircases (and other passageways), with common control of all lamps. The device turns on LED lamps
(in one or two steps), and then turns them off after a specified time. In the case of dimmable lamps, the
turning on and off happens gradually and smoothly. The controller can also provide gentle backlight
lighting as well as react to motion and dusk.
S2-P is equipped with:
 built-in configurator capable of setting 16 parameters, e.g. brightness; timing, speed, and
smoothness of turning on/off; warning when the lights are about to turn off; and many more, which
enables the users to set the device up according to their needs;
 integrated dusk switch (IDS) which disables the controller during daylight, with a light sensor that can
be installed both indoors and outdoors.
1.1 Technical specifications
Power supply 8–24VDC / 100mA, SELV
Power supply current 10mA (average)
Power consumption 120mW
No. channels 2
Output voltage (max) 24V DC
Output load (max) 2A each
Load type LED
Protection index IP20
Safety class III
Usage continuous, indoors
Working temperature from –10°C to +45°C
Housing dimensions 35 x 90 x 65mm (2 modules)
Installation 35mm DIN rail
1.2 Terminals
The controller’s terminals are depicted above.
1.2.1 Power supply
The controller requires external power supply with regulated DC output, safety extra-low voltage (SELV)
in the range of 8–24 V DC; it should also have a minimum current load of 100 mA. The power is supplied
to the GND terminal (ground, minus) and the 12V terminal (plus).
CAUTION! Only use power supplies marked  and with galvanic separation between the output voltage
and the mains supply.
1.2.2 Inputs
The controller has the following inputs:
 UP, DN and MID ports which control turning on of the lamps: upward, downward and both directions
from the mid-floor respectively, and

smartLEDs
S2-P User manual v5.0.6
© APACHETA Smart Systems str. 3/13
 DIS port for disabling the controller, used for example for connecting the light sensor or an external
switch.
The inputs should be fed with a potential-free signal of either connection (ZERO) or non-connection
(ONE) to ground GND.
CAUTION! The only external dusk sensors and clocks suitable for using with S2-P are those marked 
and with galvanic insulation of the output voltage and the mains supply.
1.2.3 Outputs
S2-P has 2 outputs L1-L2 that control the LED lamps connected to them. Any LED lamps powered with
SELV of up to 24 V DC can be used, provided that they are supplied from a DC SELV power supply (up to
24 V) with a galvanic insulation of the output voltage from the mains supply. The maximum current
must not exceed 2 A per single output. The outputs should be connected to the negative terminal
(cathode) of the LED lamps.
The outputs can be used either with dimmable LED lamps (smooth turning on/off, gentle backlight
lighting), as well as non-dimmable (instantaneous turning on/off, no backlight lighting).
The L2 output can be used as the Master lamp; this lamp is turned on first and turned off last.
1.3 Configurator
The parameters of S2-P may be set up with the integrated configurator (see Sec. 2).
1.4 Integrated dusk switch (IDS) with a light sensor
S2-P is equipped with an integrated dusk switch (IDS). The IDS disables the controller’s operation during
daylight, and is activated by (i) connecting the light sensor to the DIS port and (ii) setting the threshold
light level by configuring the DIS input parameter to a value between S1 and S10. The IDS responds only
to long-term changes in light conditions, ignoring any short-term fluctuations. The light sensor may work
both outdoors and indoors, which makes it more convenient than external dusk sensors that work
properly only when exposed to natural sunlight (any artificial light sources can cause malfunction of
external dusk sensors).
1.5 Controller’s operation
The default state of the controller is the standby state when no inputs are active. In this state dimmable
lamps may be either off or on with gentle backlight; non-dimmable lamps are off. The controller is
awaiting a signal either at the DIS port (which will disable the controller and turn all the lights off) or
from any of the UP /DN/MID inputs (which will start the lighting sequence).
CAUTION! During the normal operation of the controller, the LEDs on the electronic board (see Sec. 2)
indicate whether S2 is in the active state (GREEN diode on) or blocked (RED diode on).
The S2 lighting sequence consists of successive phases: turning on, lights on, warning (if set) and turning
off.
1.5.1 Turning lamps on
The ‘turning-on’ phase consists of turning on consecutive lamps:

S2-P User manual v5.0.6
smartLEDs
str. 4/13 © APACHETA Smart Systems
 L1 and then L2, if the signal came from the UP input;
 L2 and then L1, if the signal came from the DN input;
 L1 and L2 simultaneously, if the signal came from the MID input.
If another signal appears at the other input while the lamps are being turned on, the sequence will also
start from the other side.
If applicable, the Master lamp (L2)is turned on first, either before or at the same time as L1. The
smoothness of the turning on of the lamps can be set within a broad scope by setting the Smoothness
parameter: from sharp to very smooth turning on.
1.5.2 Lights on
When the lights are on, they remain on for a time predefined by the On time parameter. The time
extends when a new signal appears at any of the inputs.
1.5.3 Warning
When the time determined by the On time parameter passes, either the lights turn off (if the Number of
warnings parameter is set to 0) or the controller enters the warning phase (if Number of warnings is
greater than 0). The warning phase informs the user that the lights are about to turn off. The phase
consists of a number of ‘warning–waiting’ cycles consisting of the warning and awaiting the user’s
reaction. The warning can be either a short dimming of lights (a ‘blink’) or alternate dimming of L1 and
L2 (a ‘flicker’).
1.5.4 Turning lamps off
Turning off the lamps is defined as
dimming the lights from the full brightness
to the backlight level brightness.
The ‘turning-off’ phase is reversed with
respect to the turning-on phase: the lamps
are turned off either as they were turned
on or in the reverse order (depending on
the setting of the Off direction parameter).
The Master lamp (if set) is turned off last.
The smoothness of the turning off is the
same as in the case of turning on, and set
with the Smoothness parameter.
2 CONFIGURATION MANUAL
2.1 Introduction
The controller is configured with the built-in Configurator shown above.
The Configurator consists of three configurational buttons (SET, ‘+’, and ‘–’), and two signalling LEDs,
RED and GREEN. The SET button increments the number of the parameter being set or exits the
configuration procedure. The ‘+’ and ‘–’ buttons change the value of the parameter being set.

smartLEDs
S2-P User manual v5.0.6
© APACHETA Smart Systems str. 5/13
2.2 Configuration
To begin the configuration, follow the steps 2.2.1–2.2.2 below.
2.2.1 Get access to Configurator
Open the controller casing (by removing the front cover).
2.2.2 Put the controller into configuration mode
Put the controller into the configuration mode by pressing and holding the SET button until both
signalling diodes start blinking quickly (please be patient; it may take about 4 seconds); then release the
SET button.
2.3 Setting configuration parameters
The configuration parameters are stored in the non-volatile memory (also after the device is switched
off). The controller is shipped with the parameters preset to default values (see Table 1).
The parameters can be set in accordance with Table 1.
The configuration is done in a loop of 17 steps, setting one parameter per step in all the first 16 steps
except the final one. The final step allows to either restart the configuration from step 1 or to finish the
configuration. If the latter case, three options are given: (1) to save the new configuration, (2) to discard
the new configuration, or (3) to restore the factory settings.
At each step the Configurator displays, through the signalling diodes, the step number and the present
value of the parameter being set. The current value is communicated through a repeating series of
flashes of the GREEN diode, in accordance with Table 1. At the same time, the step number is
communicated by the number of flashes of the RED diode. To illustrate: a repeating single flash of the
RED diode means the parameter being set is Master Lamp (parameter no. 1), while 0 consecutive
flashes in a series of the GREEN diode means the current setting is ‘no Master lamp.’ To change the
value of the parameter, use the ‘–’ and ‘+’ buttons (selecting the preceding or the next value from Table
1, respectively). Having set the value of the parameter (or when we want to leave its value unchanged),
we move to the next step by pushing the SET button briefly (under 2 seconds).
Reaching the final (17th) step in the loop is signalled by the RED diode giving off a steady light. There are
then two possibilities:
 To return to the beginning of the configuration loop, i.e. the first step, in order to repeat all the steps
and correct the settings, press the SET button briefly (under 2 seconds).
 Choose the desired value of the Decision? parameter with the ‘–’ and ‘+’ buttons, then press and hold
the SET button until both diodes switch off (>4s). Selecting the value SAVE will result in saving the
new configuration in the non-volatile memory of the controller. Selecting the value QUIT will result in
discarding the new configuration and restoring the previous configuration. Selecting the value
RESTORE will bring back the factory defaults.
CAUTION! Pressing the SET button briefly (under 2 seconds) will always advance the configuration
process to the next step.

S2-P User manual v5.0.6
smartLEDs
str. 6/13 © APACHETA Smart Systems
CAUTION! Pressing and holding (for at least 4 seconds) the SET button (at every step except Decision?) or
cutting off the power supply will cause the configuration process to exit without saving the
new parameters.
CAUTION! The built-in Configurator is capable of setting only the parameters shown in Table 1.
CAUTION! Pressing ‘+’ when the maximum value is displayed moves the selection to the first value; and
pressing ‘–’ when the first value is displayed moves the selection to the maximum value.
CAUTION! If no button is pressed for about 30 minutes, the controller will quit the configuration mode.
CAUTION! Exiting the configuration with saving the new settings is possible only in the last step of the
sequence (Decision?), with the value set to SAVE.
CAUTION! The electronics board is sensitive to electrostatic charges which can damage the controller.
Before opening the controller, discharge accumulated loads by touching a grounded object
with your hand. You should also be particularly careful (protect against foreign voltage, short
circuit, flooding, etc.) so as not to damage the controller.
CAUTION! Due to the difficult access, you may need to use a long, pointed object such as a pencil or
toothpick (it must not be a conductive object, e.g. metal) to press the buttons.
CAUTION! In Configuration mode, LED lamps may be in a random state.
2.1 Parameters set by Configurator
CAUTION! Changing the parameters indicated as ‘[advanced]’ substantially affects the operation of the
controller, and it is recommended to change these with caution.
2.1.1 Master lamp
Allows to decide whether L2 is to be used as a master lamp; if the Master lamp is dimmable; and if the
Master lamp should be turned on one step before or together with the start of the lighting sequence.
2.1.2 Number of warnings
The number of the ‘warning-waiting’ cycles; ‘0’ means no warnings.
2.1.3 Warning type
The style the warning is displayed.
2.1.4 Step type
The pace of the turning on and off of the consecutive lamps in the sequence.
2.1.5 Off direction
The order of turning off the consecutive lamps (the same as the turning on or the opposite).
2.1.6 Smoothness
The smoothness of the dimming/brightening of the lamps. This parameter determines the visual effect
of the dimming/brightening: low values of smoothness make the process energetic, while high values
make it smooth and gentle. There are seven values to choose from. In the case of non-dimmable lamps
the parameter must be set to 0; then there is no backlight lighting and the turning on and off proceeds
in a one-by-one switching fashion.
2.1.7 Brigthness
The brightness of the LED lamps.

smartLEDs
S2-P User manual v5.0.6
© APACHETA Smart Systems str. 7/13
CAUTION! While this parameter is being set, lamps L1 and L2 are lit with intensities corresponding to the
values of the Brightness and Backlight lighting parameters, respectively.
2.1.8 Backlight lighting
The brightness of the backlight lighting of the LED lamps during stand-by, expressed as the percentage
of the brightness set by the Brightness parameter.
CAUTION! While this parameter is being set, lamps L1 and L2 are lit with intensities corresponding to the
values of the Backlight lighting and Brightness parameters, respectively.
2.1.9 Master brightness
The brightness of the Master lamp.
CAUTION! While setting this parameter, L2 is lit with a brightness corresponding to this parameter.
2.1.10 Master backlight
The stand-by backlight value of the Master lamp (expressed as a percentage of the Master brightness
parameter).
CAUTION! While setting this parameter, L2 is lit with a brightness corresponding to this parameter.
2.1.11 Turning-on time
The time elapsed between the start of the first and the last lamp turning on.
2.1.12 On time
Determines how long the lamps remain on.
2.1.13 Warning time
The duration of a single warning.
2.1.14 Waiting time
Determines the ‘waiting’ time of the ‘warning-waiting’ cycle, when the controller awaits the user’s
reaction after a warning.
2.1.15 Turning-off time
The time elapsed between the start of the first and the last lamp turning off.
2.1.16 Active level [advanced]
The level (ZERO or ONE) defined as the active state at the controller inputs.
CAUTION! An input left floating has the value ONE. Setting the active level to ONE while an input is left
floating will result in a permanent active state.
2.1.17 2. DIS input [advanced]
Determines what is done with the active state at the DIS input. The possible parameters are: BLOCK,
UNBLOCK, TOGGLE, and S1, S2, …, S10. Selecting one of the values S1–S10 activates the built-in dusk
switch. The values from S1 (darkest) to S10 (brightest) determine the external light threshold of the dusk
sensor above which the switch blocks the controller.
CAUTION! Setting the parameter to one of S1, …, S10 with the sensor disconnected will result in the
controller not being blocked during daylight.

S2-P User manual v5.0.6
smartLEDs
str. 8/13 © APACHETA Smart Systems
CAUTION! For the built-in dusk switch to work correctly, it is necessary to connect the enclosed sensor to
the DIS terminal.
CAUTION! Setting the parameter to TOGGLE allows for controlling the DIS input manually with a
pushbutton. With this setting, the controller by default starts in the active state when the
power supply is turned on.
CAUTION! The default settings of the parameters Active level and DIS input are appropriate when the
DIS port is left floating.
2.1.18 Decision?
This is the final step in the configuration process. Pressing the SET button briefly (< 2 s) restarts the
configuration process. Pressing it longer (> 4 s) exits the configurator. Choosing the SAVE option and
pressing the SET button long exits the configurator with the new configuration saved. Selecting the QUIT
option and then pressing the SET button long results in abandoning the configuration and restoring the
prior settings. Similarly for the RESTORE option: the configuration process will be halted and the factory
settings brought back.
CAUTION! To confirm the selected option (SAVE, QUIT, or RESTORE), press the SET button and hold for at
least 4 s until both signalling diodes go off.
Table 1. S2-P configuration using built-in Configurator (default values are bolded and underlined)
Parameter Value
RED diode
(# of flashes)
GREEN diode
(# of flashes) Remarks
Start of
configuration
fast blinking
until SET
released
fast blinking
until SET
released
SET buton pressed for >4s
Master lamp
NO
1
not flashing
no Master lamp
BRIGHTEN
TOGETHER
1
1
Master dimmable, brightened
together with the first lamp
BRIGHTEN
BEFORE
1
2
Master dimmable, brightened
before the first lamp
SWITCH
TOGETHER
1
3
Master not dimmable, turned on
together with the first lamp
SWITCH
BEFORE
1
4
Master not dimmable, turned on
before the first lamp
Number of
warnings
0
2
not flashing
no warnings
1
2
1
1 warning
2
2
2
2 warnings
3
2
3
3 warnings
4
2
4
4 warnings
5
2
5
5 warnings
6
2
6
6 warnings
7
2
7
7 warnings
Warning type
BLINK
3
not flashing
blink
PICO
3
1
very fast flicker
NANO
3
2
fast flicker
MICRO
3
3
medium flicker

smartLEDs
S2-P User manual v5.0.6
© APACHETA Smart Systems str. 9/13
MILI
3
4
slow flicker
Off direction
BACKWARD
4
not flashing
turning off in opposite direction as
turning on
FORWARD
4
1
turning off in the same direction as
turning on
Smoothness
0
5
not flashing
not dimmable lamps
1
5
1
sharp brightening/dimming
2
5
2
3
5
3
4
5
4
smooth brightening/dimming
5
5
5
6
5
6
7
5
7
very smooth brightening/dimming
Brightness
10%
6
3
10% max brightness
20%
6
4
20% max brightness
30%
6
5
30% max brightness
40%
6
6
40% max brightness
50%
6
7
50% max brightness
60%
6
8
60% max brightness
70%
6
9
70% max brightness
80%
6
10
80% max brightness
90%
6
11
90% max brightness
100%
6
12
100% max brightness
Backlight lighting
0%
7
not flashing
no backlight lighting
2%
7
1
2% brightness
5%
7
2
5% brightness
10%
7
3
10% brightness
20%
7
4
20% brightness
30%
7
5
30% brightness
40%
7
6
40% brightness
50%
7
7
50% brightness
60%
7
8
60% brightness
70%
7
9
70% brightness
80%
7
10
80% brightness
90%
7
11
90% brightness
Master brightness
10%
8
3
10% max brightness
20%
8
4
20% max brightness
30%
8
5
30% max brightness
40%
8
6
40% max brightness
50%
8
7
40% max brightness
60%
8
8
60% max brightness
70%
8
9
70% max brightness
80%
8
10
80% max brightness
90%
8
11
90% max brightness
100%
8
12
100% max brightness
Master backlight
0%
9
not flashing
no backlight lighting

S2-P User manual v5.0.6
smartLEDs
str. 10/13 © APACHETA Smart Systems
2%
9
1
2% Master brightness
5%
9
2
5% Master brightness
10%
9
3
10% Master brightness
20%
9
4
20% Master brightness
30%
9
4
30% Master brightness
40%
9
6
40% Master brightness
50%
9
7
40% Master brightness
60%
9
8
60% Master brightness
70%
9
9
70% Master brightness
80%
9
10
80% Master brightness
90%
9
11
90% Master brightness
100%
9
12
100% Master brightness
Turning-on time
0s
10
not flashing
simultaneous turning on
0,4s
10
1
turning-on time: 0,4s
1s
10
2
turning-on time: 1s
2s
10
3
turning-on time: 2s
3s
10
4
turning-on time: 3s
4s
10
5
turning-on time: 4s
6s
10
6
turning-on time: 6s
9s
10
7
turning-on time: 9s
12s
10
8
turning-on time: 12s
18s
10
9
turning-on time: 18s
24s
10
10
turning-on time: 24s
On time
0s
11
not flashing
no lights-on phase
4s
11
1
on time: 4s
10s
11
2
on time: 10s
20s
11
3
on time: 20s
30s
11
4
on time: 30s
40s
11
5
on time: 40s
60s
11
6
on time: 1min.
90s
11
7
on time: 1,5min.
120s
11
8
on time: 2min.
180s
11
9
on time: 3min.
240s
11
10
on time: 4min.
Warning time
0s
12
not flashing
no warning
0,4s
12
1
warning time: 0,4s
1s
12
2
warning time: 1s
2s
12
3
warning time: 2s
3s
12
4
warning time: 3s
4s
12
5
warning time: 4s
6s
12
6
warning time: 6s
9s
12
7
warning time: 9s
12s
12
8
warning time: 12s
18s
12
9
warning time: 18s
24s
12
10
warning time: 24s
Waiting time
0s
13
not flashing
no waiting
0,4s
13
1
waiting time: 0,4s
1s
13
2
waiting time: 1s

smartLEDs
S2-P User manual v5.0.6
© APACHETA Smart Systems str. 11/13
2s
13
3
waiting time: 2s
3s
13
4
waiting time: 3s
4s
13
5
waiting time: 4s
6s
13
6
waiting time: 6s
9s
13
7
waiting time: 9s
12s
13
8
waiting time: 12s
18s
13
9
waiting time: 18s
24s
13
10
waiting time: 24s
Turning-off time
0s
14
not flashing
simultaneous turning-off
0,4s
14
1
turning-off time: 0,4s
1s
14
2
turning-off time: 1s
2s
14
3
turning-off time: 2s
3s
14
4
turning-off time: 3s
4s
14
5
turning-off time: 4s
6s
14
6
turning-off time: 6s
9s
14
7
turning-off time: 9s
12s
14
8
turning-off time: 12s
18s
14
9
turning-off time: 18s
24s
14
10
turning-off time: 24s
Active level
ZERO
15
not flashing
connected to GND
ONE
15
1
disconnected from GND
DIS input
DISABLE
16
not flashing
active level of DIS disables the
controller
ENABLE
16
1
active level of DIS enables the
controller
TOGGLE
16
2
active level toggles DIS input
S1
16
3
threshold brightness S1
S2
16
4
threshold brightness S2
S3
16
5
threshold brightness S3
S4
16
6
threshold brightness S4
S5
16
7
threshold brightness S5
S6
16
8
threshold brightness S6
S7
16
9
threshold brightness S7
S8
16
10
threshold brightness S8
S9
16
11
threshold brightness S9
S10
16
12
threshold brightness S10
Decision?
on
any
SET pressed <2s – continue
configuration – move to step 1
SAVE
on
1
SET pressed >4s (until GREEN diode
stops blinking) – save new settings
and finish configuration
QUIT
on
2
SET pressed >4s (until GREEN diode
stops blinking) – quit configuration
without saving new settings
RESTORE
on
3
SET pressed >4s (until GREEN diode
stops blinking) – restore factory
settings and finish configuration
normal function
free
free
„+” „-” and SET buttons released

S2-P User manual v5.0.6
smartLEDs
str. 12/13 © APACHETA Smart Systems
3 Installation Guide
The S2-P controller is a versatile device with numerous possible applications. The diagram below depicts
an example of the most common installation.
The standard modular housing allows the controller to be installed in small electrical boxes on a
standard DIN rail, which simplifies the installation considerably.
CAUTION! Installing the controller requires technical knowledge and experience and should be carried out
by a qualified person. Connection of the power supply to the mains may only be done by a
qualified electrician.
CAUTION! All installation proceedings should be carried out with the power supply disconnected. The
voltage may only be turned on once it has been ensured all connections are correct.
CAUTION! A particular caution is advised when connecting the control inputs (UP, DN, DIS). These are
potential-free inputs and no voltage should be applied to them as it may result in burning of
the controller. Please ensure that any control device (e.g. motion sensors, including those
powered with 12V) do not apply any voltage onto these inputs.
CAUTION! We advise particular caution also when connecting the controller’s outputs. Before connecting
the output circuits (LED lamps) please ensure there are no short circuits. A short circuit (or
overload) at any of the outputs may result in burning of the controller.
The installation should follow this order:
1 Connect all LED lamps / LED strips and the power supply to the controller. For now, do not connect
anything to the controller inputs (UP, MID, DN, DIS).
2 Check if all connections are correct and faultless: if carried out in accordance with the installation
diagram, if there are no short nor open circuits, if the polarity is set correctly, etc.
3 Insulate the connections.
4 Turn the power on. All LED strips should light up to the backlight value (ordinary lamps - 2%
brightness; Master lamp - off).
5 Connect the OUT output of the lower DELTA sensor to the UP input. Remove the sensor cover.
Detection of a person by the DELTA sensor is signalled by the lighting of the green LED on the front
of the sensor and should cause smooth switching on of L1 and L2, and after about 30 seconds from
the end of the detection by the sensor, the lights should smoothly dim (to the backlight level).
6 Repeat the operation from p. 5 for the DOWN sensor and, in the case of a mid-floor installation, for
the MID sensor.
7 The next step is connecting the light probe, switch or timer to the DIS input. The probe, switch and
timer has 2 output terminals: one should be connected to GND and the other one to the DIS input
of the stair controller, according to the assembly diagram. In case of light probe, in order to activate
the internal dusk switch, it is necessary to change the DIS input parameter to one of the values from
S1 (darkest) to S10 (brightest). Depending on the brightness detected the IDS should switch the
controller to active (if it’s dark) or blocked (if it’s bright) state with certain delay.
8 In the last step, if necessary, configure other controller parameters.
Remember to make any manipulations and changes in the installation with the power off. Even a short-
term occurrence of voltage on the wrong outlet of the controller can permanently damage the

smartLEDs
S2-P User manual v5.0.6
© APACHETA Smart Systems str. 13/13
controller, and such damage is not covered by the warranty. Turn the power on only when you are sure
that everything is connected properly.
3.1 EXAMPLE DIAGRAM. Typical staircase installation of S2-P, with a common power
supply for the controller, sensors and lamps; with an optional Master lamp;
controlled by staircase sensors DELTA; with built-in dusk sensor; and with the
option to switch on the lamps permanently.
Assumptions:
o 2 groups of LED staircase lamps (L2 as the upper stair level lamps or, alternatively, Master lamp
(ceiling/wall light or handrail backlight))
o common power supply of the controller, DELTA sensors and LED lamps (typically 12 VDC)
o automatic turning on the lights by DELTA sensors
o option: permanent steady lighting with additional switches
o blocking the controller during daylight with a built-in dusk switch.