Cybernetica AS Department of Navigation Systems

EKTA logo

LED Spotlight Family E5711

Combining the positive experiences gained during the years of designing Light Emitting Diode (LED) based signal lights for application in marine visual aids to navigation systems, and the successful E58 product range of high quality robust LED Indicator Panels for industrial applications, Cybernetica team has designed a new LED Spotlight E5711 product family for use as a high reliability low power light source for environmentally demanding applications. E5711 is intended for use as a working light in industrial, architectural, or other similar applications, but it is also expected to find use as a signal light due to clearly defined parameters of it's light beam.

The light unit of the LED Spotlight E5711 is built upon a 10 mm aluminium alloy (EN AW-6063) base plate with a protective visor, integrating 5 high-power market leading Luxeon III Star LEDs with off-the-shelf lenses of choice under a clear UV-stable Makrolon® (by Bayer AG) polycarbonate cupola. Product versions with wide elliptic light beam, medium, or narrow circular light beam are available. The electronics part, a temperature controlled linear power supply, is potted in resin, providing constant current to the LEDs and guaranteeing low RF emissions as well as long product lifetime under specified range of environmental operating temperatures. The LED current and thus the light output is gradually limited at the temperatures above 30°C. Power is supplied using the same 5-pole M12 receptacle used on E581X LED Indicator Panels. The assembly is fully sealed and has no user-serviceable parts inside, providing practically maintenance free lifetime, once installed and used according to the supplied instructions.

The E5711 LED Spotlight is supplied with a dedicated U-clamp manufactured of 6mm sheet aluminium as shown above. Alternatively, the light unit can be surface mounted using four 10mm holes at each corner, located within a rectangle of 120 mm (W) x 110 mm (H); in this case, the M12 power supply connector in the upper middle section of the back side requires attention. A set of high quality A4 stainless steel hex head M6 bolts is supplied for mounting and positioning the LED unit inside the clamp. The Spotlight is supplied in black polyurethane powder coated finish. Mounting of the U-clamp on a pipe or rail of up to 55mm diameter is an option.


  • Long maintenance-free service life expectancy: exceeding 45000 working hours due to the use of gigh quality LED technology and hi-tec Makrolon® cupola
  • Low electromagnetic noise and power consumption: less than 16W at 24VDC, universal connection polarity (common "+" or "-")
  • Homogeneous elliptic or circular beam pattern – no disturbing “sidelobes” typically produced by glass front lenses
  • Superior shock and vibration tolerance, ensuring trouble free use on mobile platforms
  • Robust design with ingress protection to class IP68 for excellent durability in harsh field conditions
  • Rugged build with dependable 360° horizontal and 60° vertical adjustment of the light beam direction

LED Spotlight Versions

While the white E5711.W.L unit with elliptic light beam is starting the product family, versions with circular light beam emitting Red, Green, Yellow, and Blue light for illumination of objects and surfaces will be available for ordering.

E5711 LED Spotlight Family Overall Specifications
Parameter   E5711.W.L  E5711.W.N
Power supply voltage range
22 - 28V DC
Typical power consumption 
Typical light intensity in beam centre 
Typical horizontal double beamwidth at 50% intensity 
Typical vertical double beamwidth at 50% intensity 
Colour   5500K White (typical); other colours upon request
Weight, including the U-clamp (0.5kg) 

Environmental operating conditions
Ambient air temperature from – 40°C to + 55°C (IEC 60068-2-1, IEC 60068-2-2, IEC 60068-2-14)
Relative humidity up to 98 % at temperature up to +35°C  (IEC 60068-2-3)
Salt mist conditions  IEC 60068-2-11
Mechanical vibration 10 - 500 Hz with acceleration up to 10 g (IEC 60068-2-6)
Ingress protection class IP68 (IEC 60529), 1m / 30 minutes
Cupola properties Usable over a broad temperature range (– 100 to +135 °C);
Flammability classification: UL 94V-2
maximum temperature in glow wire test: 850 °C; see Makrolon® 2407 datasheet from Bayer AG.
Safety class (optical output) Class 3R (IEC 60825-1:1993+A1:1997+A2:2002)

More detailed information, including the information on prices and availability of our products, can be obtained from our marketing group.

CAUTION: LED light units are sources of bright light, do not stare directly into the beam from close distances and observe all the warnings and guidelines in the Instruction Manual. ekta™ E5711 LED Spotlights are classified as Class 3R LED devices according to the standard IEC 60825-1:1993+A1:1997+A2:2001.

Note: The manufacturer reserves the right to change this specification without prior notice. Makrolon® is a registered trademark of Bayer AG, Leverkusen, Germany.

ekta™ Home
Marine Products
LED Products for Signalling
Synchronisation and 
GPS Locators
Equipment and 
Marine Lanterns
Power Supplies, 
Battery Chargers
Measurement and Automation
Product Index

© 2007 Cybernetica. Last updated 2007-09-28