
SIMARINE Light Switch User Manual

Introduction
Simarine’s Light Switch is a Multifunctional 12V DC double switch with integrated dimmers.
The Multifunctional switch can be used in all 12V DC installations for LED lights and other devices using 12V DC with a maximum current load of 5A. It includes two independent buttons with the DC dimming functionality for 12V LEDs
The power source is common for both buttons. Each button independently controls one channel.
Width modulation with 400Hz and 12V pulse is implemented for LED dimming. Simarine’s SICOM allows the switch to be used in multiple ways, controlling one or more lights from different locations.
Each switch has two 16 position rotary switches.
EU Declaration of Conformity

MANUFACTURER: SIMARINE d.o.o.
ADDRESS: Ulica škofa Maksimilijana Držecnika 6, SI-2000 Maribor, Slovenia, EU
TELEPHONE NUMBER: +386 40 277 107
E-MAIL ADDRESS: info@simarine.net
Declares that the following product:
PRODUCT TYPE: LIGHT SWITCH
Is in conformity with the relevant European union harmonization legislation:
EMC Directive 2014/30/EU
(as per harmonized standards EN EIC 61000-6-1:2023, etc.)
Low Voltage Directive 2014/35/EU
(as per harmonized standards EN EIC 62368-1:2023)
Radio Equipment Directive 2014/53/EU
(as per harmonized standards ETSI EN 300 328, ETSI EN 301 489-1, ETSI EN 301 489-17 and EN 18031)
RoHS Directive 2011/65/EU and amendments
(as per harmonized standards EN EIC 63000:2018.)
Safety
Only qualified electricians with proper safety equipment should make installation of Simarine electronics. When working with batteries, you should wear protective clothing and eye protection.
CAUTION: Do NOT connect anything to a damaged battery. It could heat up, catch fire, or explode.
Overview

Short press of the switch 1 or switch 2 – ON/OFF
Long press of the switch 1 or switch 2 – Dimmer functionality
If you connect 2 channels parallelly, the current limit doubles (10A)
If you have two light switches, connected to the other via SiCOM cable, then
the second switch doesn’t need an additional power source (the second switch has the same address as the first switch)
Installation
Operation
The multifunctional switch can be connected in daisy chain to operate in multiway switching.
It can operate in three different modes:
- PWM mode (Pulse Width Modulation) dimming LED lights.
- ON/OFF mode switching 12V ON or 0V OFF on outputs.
Both buttons can simultaneously control both outputs (only in PWM and On/Off mode).
Mounting
CAUTION: Install the power unit in a clean and dry place protected from accidental spilling of liquids.
All measurements are in milimeters (mm).

Cables
CAUTION: Failure to observe the required cable cross-sections can damage the shunt, wiring, or cause a fire.
SiCOM data cable:
- For the SiCOM connection use the supplied cable
Cable length C
| Cable length | Cable type |
| < 5m | No limitations |
| >= 5m | 2x2x0.25 mm2 twisted pair (recommended) |
Detailed view
J1 – female RJ9 connector – SiCOM communication
J2 – female RJ9 connector – SiCOM communication
CH1:
- SW3 – 16 position rotary switch – Switch Address (Orange)
- SW4 – two toggle DIP switch – control both outputs (Yellow)
CH2:
- SW5 – two toggle DIP switch – enable/disable write lights status to nonvolatile memory (Blue)
- SW6 – 16 position rotary switch – Buttons Address (Purple)

- To DC power source negative terminal (GND)
- To DC power source positive terminal (+12V)
- Positive terminal to LED light (CH1+)
- Negative terminal to LED light (CH1-)
- Positive terminal to LED light (CH2+)
- Negative terminal to LED light (CH2-
Multiway switching
SiCOM communication standard is implemented to enable the multiway switching. On each switch there are two RJ9 four pin female connectors.
Connect one switch with another, to communicate using SiCOM cable with RJ9 male connectors on both ends.
The implemented communications standard is RS485 physical layer standard.
The maximum number of devicesconnected to the same bus is 32 and overall length of the SiCOM serial bus must not exceed 30 meters.
The proper addresses have to be set to enable communications between multifunctional switches. Each rotary switch has 16 positions labeled from 0 to F (hexadecimal number system).
Setting addresses
Two rotary switches SW3 and SW6 are on the multifunctional switch and have a total of 16 positions (1 to F – hex number system).
These switches are used to set up the unique address for the switch and buttons on the switch.
The button represents the smallest entity which has to be addressed in the multiway switching to operate properly. If the button on one multifunctional switch has the same address as the second switch then both are configured in multiway switching. To use three or more switches in multiway switching on all switches, you have to be set the same address for one button.
Rotary switch SW3 is used to address the multifunction switch itself. Rotary switch SW6 is used to address
buttons on the multifunctional switch.
Factory default for SW3 is position 0 and for SW6 is position
Rotary switch SW3
To enable communication between two or more multifunctional switches all SW3 rotary switches have to be set to the same position.
SW3 determines the high part of the button address.
The high part is the same for the complete switch. Lower part of the button address is determined with SW6.
If two or more switches have to work in the multiway switching, then all of them must have the same high part address – SW3 must be set to the same position.
Example: SW3 rotary switch is set to position “2” on the multifunctional switch

Rotary switch SW6
SW6 rotary switch sets the address for buttons. One position on SW6 switch defines address for button 1 and button 2.
Documents / Resources
![]() | Light Switch |
References
- User Manualmanual.tools
