LED Traffic Lights, Traffic light countdown signs and Traffic Products :: SEA Company

LED Traffic Lights, Traffic light countdown signs and Traffic Products



Traffic lights of SEA Company production have number of advantages – availability of developed especially for optical system with central source of light front diverging lens and installed inside light source Fresnel lens. These technical solutions guarantee evenness of light distribution and form required diagram of radiation pattern.

Use of darkening technology while manufacture of front lens allows to completely exclude phantom effect of color lighting, what helps to improve traffic safety.

LED modules lifetime is much longer then lifetime of incandescent lamps and halogen light sources and amounts to 100 000 hours. Warranty period of exploitation is 5 years. Traffic lights are very convenient in exploitation and very trustable in work.


Traffic lights of SEA Company production


Main technical characteristics of LED traffic lights with central light source of SEA Company manufacture:


D 200

D 300

Luminous intensity
(red, tallow, green), Cd



Light distribution


B 2/1 (type W)

B 3/1 (type N)


conform to Standard EN12368

Wavelength, nm
(conform to Standard
EN 12368)


613,5 – 631


585 – 597


525 – 530

Radiation uniformity



Phantom effect protection class

Possibility of phantom lighting from external light source is excluded

Supply voltage, V



Maximum power consumption, W



Minimum power factor


Protection level


Maximum operating humidity, %


Operating temperatures, °С

-40 / +70


Class IR3


Photo 1. SEA Company traffic lights on Kiev


Main features of LED traffic lights with central light source of SEA Company manufacture:

  • Traffic light characteristics conform to Standard EN12368
  • Supply voltage 220V (+22 / -33) 50Hz
  • Average power for one traffic light section doesn’t exceed 12W
  • Traffic lights maintain stable lighting parameters during whole time of exploitation within range of supply voltage from 187V to 242V and have minimum power factor 0,9 within whole range of supply voltage and operating temperatures
  • Front lenses of modules are transparent and completely exclude phantom flash (pic.1).
  • Traffic light housings are made of black polycarbonate
  • Protection level IP65
  • Operating temperatures -40°С +70°С
  • Traffic light weight depending on configuration – 7-11 kg
  • Traffic light construction allows fastening of additional sections to it
  • Fastening construction allows to install traffic lights at all types of consoles, walls and ropes
  • Lifetime not less then 10 years
  • Warranty period of exploitation is 5 years

Our products fully meet the highest world standards and European EN12368 standard.


LED traffic light modules 200 mm and 300 mm

LED traffic light modules has construction with use of central light source and built-in a module lens system (Fresnel lens), what leads to high efficiency.

Main characteristics of LED traffic light modules:

  • Single construction design
  • Іntegrated Coolіng Entіty (ІCE)
  • technology LEDFLEX for management of LED modules
  • exclude of phantom effect
  • sinusoid curve of electric current
  • power factor 0,9 within whole range of supply voltage and operating temperatures
  • compatibility with whole types of traffic controllers, which present on Ukrainian market
  • long lifetime (> 10 years)

Optical characteristics


Typical parameters






Luminous intensity






EN 12368, 6.3, Tab. 1

Light distribution

Certificate of conformance ВБ, №675674,
registration № UA1.149.0002420-08 dd. 11.01.2008

EN 12368, 6.4, Tab. 3,4

Phantom effect

No phantom effect (protection class – 5)

EN 12368, 6.6

Ration between light flux
and reflected light

Red - 22,5:1
Yellow - 18,4:1
Green - 26,1:1


Red - 625…630nm;
Yellow - 590…595nm;
Green - 525…530nm.

EN 12368, 6.7
DIN 6163, Part 5

Electric parameters of LED modules:

  • Supply from alternative current network with 50Hz frequency and 220V (+22% / -33%) supply voltage
  • Power, consumed by the modules is not exceeding 12W.

Environmental conditions:

  • Operating temperature – from -40ºC up to +60ºC
  • Relative humidity – 98% at +25ºC
  • Module protection level – IP65


Information on materials:

  • 1 - Front lens material - polycarbonate.
    Front lens color – no colored tinted or colored.
  • 2 - Fresnel's lens material – transparent acryl.
  • 3 - Housing material – dark polyamides.


Symbols are prepared in form of masks according to dimensions indicated in ДСТУ 4092-2002 (Appendixes A, Б) and set into optical system of traffic light.

LED traffic and pedestrian bodies of signal heads


  • Top aesthetic design, high quality black polycarbonate material guaranties pleasant visual perception of traffic lights in the streets.
  • Single traffic light body compatible with 300mm and 200mm lens diameter.
  • Different types of traffic lights may be easily combined in one body.
  • Fast and easy mounting of LED modules, the design is handy in use.
  • High quality of polycarbonate body guaranties long operation life under any adverse environmental conditions.


The bodies are made of firm polycarbonate (not of reuse material) and secure high level protection from external factors, such as weather, vibrations, temperature fluctuations and vandalism.






Protection level

Class IV / IP 56

(ДСТУ 14254)

Class IR 3

(25Hz, 19,6 m/s²)

Class A,B,C



Dimensions and weight of the main types of traffic lights

Traffic light part number

Dimensions, mm, not more

Weight, kgs, not more

LED traffic lights TL T1.1-SEA



LED traffic lights TL T1.2-SEA



LED traffic lights TL T1.3-SEA



Pedestrian traffic lights TL P1.1-SEA/p>



Pedestrian traffic lights whith countdown timer TL P1.1-T-SEA



Additional accessories for traffic lights objects

Pic. 2

Along with technical characteristics of the device, a great deal of attention is paid now to its ergonomics and convenience in operation. Taking into account current market regulations applied to traffic lights objects, as well as European experience in this field, SEA Electronics Ltd. offers pedestrian call buttons corresponding to pedestrian stage of traffic light (pic. 2).

Buttons covers are made of high quality polycarbonate-plastics colored in yellow. Used material possesses its mechanical qualities within a wide range of temperatures: -40°C to +125°C. Pedestrian call buttons are furnished with an optical confirmation of the signal and are compatible with all types of traffic controllers.



Pic. 3

Type of button

Power supply voltage

Dimensions (HWD)

Button ZiR I - Mechanical button with optical confirmation


180 x 67 x 56

Button ZiR II - Sensor button with optical confirmation

For the blind – pedestrian crossings can be equipped with audible signal device (Pic. 3).

The audible signal device is designed on the basis of microprocessor circuit technique enabling recording and reproduction of all kinds of sounds and spoken messages.

Acoustic system of signal devices is equipped with a special device enabling dynamic adjustment of the volume of generated signals to external conditions.

The audible signal device, thanks to a digital technique used in it, does not demand permanent supervision. After its launch, all what is needed is single maintenance regulation to set the lowest sound volume. Spoken messages indicating the name of the respective street can be recorded to electronic memory (if this function exists in audible signal device).


Traffic lights mounting and fastening 

Module mounting: traffic light body is compatible with 300mm and 200mm lens diameter.

Fastening element design allows of installing the traffic lights on all types of the consoles, walls, wire ropes, etc.

Mounting the components into the door can be performed quickly and easily, without applying special mounting tools.


Countdown timer CT-200 from manufacturer

Kiev enterprise SEA Company would like to offer you new modern LED countdown timer CT-200 of our own make. CT-200 allows drivers and pedestrians to receive additional information about time in seconds, which remains for switching off permissive (green) or forbidding (red) traffic signals, thereby reducing probability of road accidents. The timer CT-200 is assembled in additional sections to vehicle and pedestrian traffic lights with diameter of color filter 200mm.

Novelty of countdown timers of SEA Electronics, which distinguish them from the same products of other manufacturers, is possibility of brightness correction of light-emitting diodes (LEDs) of a timer, depending on external illumination. This allows to adapt brightness of LEDs for human eyesight, not blinding people at night and to be bright enough in the afternoon. CT-200 can independently function without loss of count even at mode of blinking green light (1 sec shine/1 sec doesn’t shine), which signals about forthcoming switching off of a green signal. Thanks to considerable capacity resources of power supply output capacitor and use of electronic components meant for an industrial range of temperatures, СТ-200 can operate at an environmental temperature from -40 to +80°C.

Basic specifications

Dominant emitted wave-length

  • for figures of red signal, nm
  • for figures of green signal, nm



Minimal axial brightness of light in one segment of timer at external illumination 10kLux,Cd


Minimal axial brightness of light in one segment of timer at external illumination 1kLux in mode of correction of brightness, Cd


Maximum duration of measured and displayed signals, sec


Maximum duration of displayed decimal digital signals, sec


Maximum accuracy of measured and displayed time intervals, sec


Size of displayed decimal figure, mm


Supply voltage at 50 Hz, V


Maximum power consumption, W, not more


Protection class

IP 65

Operating-temperature range, °C


Maximum overall dimensions


Maximum weight, kg



Traffic diagnostic controllers (TDC series) of SEA Company production

Traffic diagnostic controllers,  TDC-32 model
Traffic diagnostic controllers, TDC-32 model

Traffic diagnostic controllers of TDC series (hereinafter TDC) are intended for:

  • Implementation of coordinated control of traffic-lights objects as part of traffic information systems of a wide-range integration (main-line traffic-lights objects, city/inter-regional/national control systems and for traffic monitoring);
  • Diagnostic and monitoring of load circuits of traffic-light lamps.

TDC can be used in different environment and climatic zones with temperature range from – 40° C to + 70° C and in a range of power voltage from 160 V to 250 V.

The principal goals to be achieved during design and development of TDC where: maximum fail-safety security, functional reliability, convenient operation in different working conditions. The multi-level control system completely excludes the possibility of occurrence the critical conditions of traffic-light object.

The last 10 years of microprocessor and computer equipment development shows a firm tendency for using standardized interfaces and PC-compatible architecture of computer systems building.

Подпись:    Industrial computer,  standard  of RS-104
Industrial computer, standart of rs-104

Taking into consideration these tendencies, it was decided to choose industrial PC – compatible computer as functional core of TDC. It allows:

  • Adjust flexibly, modernize and increase working capability of the controller’s hard- and soft-ware without involving outside experts in the process.
  • Connect TDC to information systems of wide-range integration degree with the help of standardized interfaces.

Use worldwide produced standardized equipment (main-boards, modems, Flesh-memory, video-monitors, mobile computers, printers, etc.) as additional equipment compatible with TDC.

Usage of PC – compatible computer as a functional core of the traffic controller, will considerably save financial expenses in future.

Traffic controllers TDC are equipped with informational channels:

  1. Four RS-232 channels:
    • internal informational network, which includes TDC modules and TDC blocks;
    • informational network of compatible equipment (transport detectors, video-cameras, traffic controllers located on neighboring intersections with centreless coordination);
    • informational channel with maintenance control panel;
    • informational channel with city/interregional control centre (including a connection block and integrated antenna). Presently, this informational channels includes two channels of connection (a main channel – GRPS, a channel of emergency connection – voice channel GSM).
  2. Two informational channels USB – backup
  3. ISA-bus – backup

Traffic controller TDC is produced on a basis of a module mode.

A traffic diagnostic controller’s set can include:

Item description

Number of blocks in TDC models

TDC -8

TDC -16

TDC -24

TDC -32


Layout box






Power contact block






Electric meter






Switching unit






Double-pole circuit breaker






Heating element (HE)






Computer module (CM)






Power supply unit (PSU)






Block of power channels (BPC)







Optional at customer’s will


Accumulator module (AM)

Optional at customer’s will


Engineering station

Optional at customer’s will

Traffic controllers TDC -40, TDC -48, TDC -56, TDC -64 with power channels 40, 48, 56, 64 accordingly, can also be produced at customer’s request.

Layout box, TDC blocks/modules (PSU, BPC, CM, AM) are produced in powder painted metal bodies. Front panels contain plugs and LEDs which inform about TDC operating mode. Plugs are chosen on the basis of their functionality and maximum reliability of the contacts, and number of LED’s is specified by maximum informational content.

Signal LEDs of BPC allow to record:

  • data exchange mode between BPC and CM;
  • availability of mains supply coming to block;
  • availability of mains supply coming from PSU;
  • power channels’ status (disconnected, connected but not active, connected and active).

Signal LEDs of PSU allow to display:

  • operating mode of PSU;
  • data exchange mode between PSU and CM;
  • availability of mains supply, which comes to block;
  • availability of mains supply outputs at PSU;
  • switching status of traffic light hardware mode (“disconnected”, “yellow blinking”, “automatic performance”);
  • availability of program response to pushing on pedestrian button of green signal call;
  • open door sensor state;
  • state of heat element (on/off);
  • charge mode of power backup battery (norm / charge / supporting).

Signal LEDs of CM allow to register:

  • availability of low-voltage power, which comes from PSU;
  • exchange mode between CM and interface;
  • exchange mode between TC and city control centre.

On the front panel of processor module situated connector for connection to external display, which helps to implement additional control of traffic controller functioning state and traffic light objects, installed at it. At the bottom of layout box situated connector for engineering desk, which helps to implement full diagnostics of functioning state of controller and row of LED lamps and attune of traffic light objects, installed at controller.

TDC has three-wire power supply diagram (phase, zero, safety ground)

TDC has 1st grade of accuracy counter of electric power consumption and bipolar breaker assembly.

Adjusting bracket allows to place traffic controller on electro-support or building wall.

Layout box of controller has anti-vandal protection: 2 special screws, mortise lock. Unapproved open of door will be registered by build in door sensor and recorded at the city control centre through communication channel.

Option “contact lock” can be useful. At the bottom of layout box can be placed lock with build in contact group. Using of this option allows to switch traffic light object to mode of yellow blinking and backwards without open of the box.

BPC can be supplied in two variants: for management of lamp- and LED traffic lights. BPC for lamp traffic lights has “smooth start” mode, which increases life cycle of traffic light lamps.

All power lines have 4-level protection system from overwork and short circuits:

  • level 1 - limitation of current rise by inductive delay block.
  • level 2 - selection of power keys with 20- repeated current margin of safety.
  • level 3 - tracing by BPC micro-controller of current in load circuit and program disconnection of power line at registered overwork, which exceeds preset threshold.
  • level 4 - safety fuse.

With appearance of apparatus defects in the load circuits (overworks which exceed preset threshold, closing of load circuit, unapproved shining of green lamps), controller switches off these circuits for allowed time. After prescribed time controller verifies occurrence of defects at earlier switched off circuits and in case of normalization of situation switches on verified circuits.

Traffic controller software allows:

  1. To create and maintain work of several (up to 4) traffic light objects by one controller.
  2. To maintain and control data exchange of traffic controller as part of traffic information system (artery of traffic light objects at centerless coordination; city system of road traffic management, etc.) with the help of any (wire or wireless) communication channels, virtual channels of Internet and their combinations with maintaining of permanent coordination of road traffic management system.

    Taking into consideration maintaining of data exchange with virtual channels of Internet and communication channels of mobile operators, controller can be used as part of interregional and national systems of management and monitoring of road traffic.
  3. To implement monitoring of operating modes of connected to TDC traffic light objects.
  4. To carry out full diagnostics of TDC equipment and connected to TDC load circuits.
  5. To react promptly to defects (lamp failure, overworks which exceed preset threshold, closing of load circuit, unapproved switching on of the chain) and recommence normal work after disappear of defects.
  6. To create and maintain work of the following traffic light types:
    • traffic light with 3 lamps (red, yellow, green);
    • traffic light with 4 lambs (main (controlled) red, additional (uncontrolled) red, yellow, green);
    • pedestrian traffic light with two lamps;
    • “arrow”;
    • tram traffic light with 4 lamps.
  7. Freely connect any grope of traffic lamps to any power line (one group should consist up to 5 traffic lamps)
  8. To control load circuits at any cable, what results in economy of cable production
  9. To implement diagnostics of traffic lamps, what predetermines planning of replacements of worn- out lamps before their failure. This increases traffic lights regularity level.
  10. To create multilevel system of assigned to the traffic light objects instructions of work on time and priorities of fulfillment.

There is a possibility of realization of program regime “black box”, which allows to get information about TDC equipment state and operating modes of installed at it traffic light objects. This helps to find out state of traffic light signalization at cross-road in case of road traffic accident. Data of “black box” will be useful for examination of defects history of TDC, load circuits and installed at controller traffic light objects.

Engineering station – it is a program production unit performed on the basis of mobile PC – compatible with computer.

It can be installed workbench “Engineer” to the engineering station, which is designed for operating with TDC equipment and load circuit of light-signal lamps and workbench “Technologist”, which is designed for operating with work scripts of light-signal objects, with workmanship instructions of light-signal objects.

TDC -16 and engineering station
TDC -16 and engineering station

Use of engineering station allows:

  1. Receive and visualize information about the controller equipment state, namely:
    • electrical parameters of controller in general (voltage and frequency of mains supply, temperature inside the assembling unit, status and mode of battery charge, activity mode of thermoregulation system, door opening sensor state, interaction with pedestrian button of green signal call, state and mode of connection block activity);
    • electrical parameters of each single power channel (voltage, current strength, elaborated power, the quantity of active lamps, routine quantity of lamps, the quantity of controlled lamps, determination accuracy of active lamps).
  2. Receive and visualize state of traffic light signaling of light-signal objects, which are programmatically installed to TDC (script number, cycle of directive duration by script, time of current mode, time from start of current cycle, duration of current cycle, time of disalignment with coordinated mode, lists of workmanship instructions of light-signal objects filtered by time of their activity).
  3. Receive from controller and visualize the results of conducted tests of internal diagnostic system for each power channel (lamp failure, circuit opening, power voltage lack, interlocking, short circuit, BPC (block of power channel) failure, etc.), and also troubles with work of program installed light-signal objects to TDC.
  4. Create new and correct existent scripts and instructions of operation of light-signal objects, installed to TDC.
  5. Visualize lists of workmanship instructions of light-signal objects, installed to TDC.
  6. Visualize and correct current time and date.
  7. To perform manually the diagnostic of power channels in different ways (“all red” + “yellow blinking”, “all green” + “yellow blinking”, “specific channel” + “yellow blinking”).

Technical data of TDC



The quantity of power channels

From 8 up to 64

Power supply voltage

From 160V up to 250V

Controlled channel load:

  • in BPC for LED matrix
  • in BPC for incandescent lamps

From 2 W up to 100 W

From 40 W up to 600 W

General load current

Is defined by automatic overload control, by counter, by section of lead wire and by customer needs

Operating temperature range

From -40ºC up to +70ºC

Countdown accuracy

Is defined by the type of selected PC and operating system, but not more than 1 minute per month

Real time clock battery life

Up to 5 years

Control modes

Hardware-controlled, by the switch of power supply or “lead lock” option

Manual control from the engineering station

Annual calendar automation, according to internal instructions of RDC

Coordinated control in accordance with instructions, received through the communication channels

Direct dispatcher control from the control center

The quantity of possible work scripts


The quantity of possible work instructions


Capacity of no-break power battery, A/hour


Time of system working capacity from battery without switching to “sleep mode”, hours


RDC contacts the city control center at the appointed time and informs about the lack of power supply. Then TC occasionally switches off the “sleep mode” and control the availability of mains supply.

Time of system working capacity from battery with switching to “sleep mode”, hours


Interface type of internal information network

RS-232 multiplexer

Types of external communications protocol of TC (city system of road traffic control, etc.)

Protocol types of information interaction of TC road controllers in the city road traffic control system are defined by the executor of this system and will be supported by the road controller. GPRS, TCP/IP protocols are implemented at the moment

Possible types of connection channels

Road controllers TC can interact with city control center through any communication channel. The main communication channel – GPRS and emergency communication channel – voice channel GSM are enabled in the block now.

Dimensions, mm, not more


The weight of controller

Is defined by the kitting-up, but not more than 50 kgs

Level distance between fixing points, mm