Light Colour/Brightness Sensor LS-04

The calibrateable Colour/Light Sensor for the ISYGLT system can be used as an outdoor Light Sensor or as an indoor sensor. Many different curves and value queries are available to use the sensor for a wide range of applications.

A special application is the regulation of light precisely to the desired light colour, e.g. in offices, schools, industry (e.g. control rooms) or museums. The direct measurement also includes daylight.

Another interesting application for biologically effective lighting control is the measurement of the outside light and transmission of the exact value into the interior.

Quick Facts

  • Colour temperature sensor
  • CCT value measurement
  • Luxmeter (V-Lambda)
  • RAW sensor red, green, blue CLEAR, IR
  • Colour temperature control
  • HCL control
  • Measurement recording for research

The digital Light and Colour Temperature Sensor LS-04 is used to measure brightness and colour temperature and can be used to optimise "Human Centric Lighting" (circadian lighting control) in schools or museums, at workplaces or in private homes. Daylight and artificial light can be evaluated with the sensor. A recording of the measurements is optionally possible very comfortably in connection with the IPMS visualisation. The measured brightness spectrum corresponds to the standardised V-Lambda curve. The colour temperature is output as a CCT value in Kelvin. In addition, information about the X- and Y-CCT coordinates and the raw values of the individual sensor chips can be called up. Thanks to extensive parameter settings, the sensor can be individually adapted to local conditions. The transmission to the master takes place with 1 to 3 digital 16 bit values. Due to its compact design, the sensor can be universally integrated into the architecture.

Electrical Data

Operating voltage 12V to 35V DC
Current consumption at 24V DC max. 20mA
Subnet (RS-485) max. 5.6V limitation by Z-diodes
Connection 4-pole wire
Operating temperature -10...+50°C
Storage temperature -25...+70°C
Humidity 0...85 % r.h. non-condensing
Protection class IP 20

Design, Dimensions, Weight

Design Mini-PVC housing with Teflon cover
soldered cable
Dimensions LxWxD 50.8x25.3x12.7mm
Weight 16g 

Ordering Data and Conformity

Type designation LS-04
Article no. 80085063
Conformity CE

Tender Documents

Instruction Manuals

Technical Drawings

Wiring Diagrams

DIP switch

8-pole DIP switch for setting the ISYGLT BUS address (0-127) is located on the rear of the module inside the housing.

Function Indicators (LEDs on the Module)

redPowerOffNo operating voltage
OnOperating voltage, no error
yellowBUSOffBUS wiring error
OnError BUS communication (address)
blinkingInterference-free data transmission

The function indicators are intended for commissioning and service purposes and should be switched off by parameter during regular operation. Deactivation takes place via the parameters in the ProgramDesigner.


Parameterisation with ProgramDesigner

  • Sensitivity and filtering
  • Deactivate function LEDs
  • Associate measured values to byte or word
  • CCT curve in K
  • CCT as xy coordinate
  • Resolution of the values
  • Curves for calibration
  • Submission RAW values

Pin Assignment

4-pole wire for the subnet (BUS A and B, RS-485) and the operating voltage (Ub, 0V)

Ub Operating voltage RJ10 Pin 4 (yellow)
0V Operating voltage RJ10 Pin 3 (green)
A Subnet (BUS A, RS-485) RJ10 Pin 2 (brown)
B Subnet (BUS B, RS-485) RJ10 Pin 1 (white)
  (By default a 20cm wire with RJ10 is soldered on. Other lengths, connection options or cable types on request.)

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Additional Equipment

  • Different wire types and lengths pre-assembled
  • Terminal box


  • Colour of housing according to customer requirements
  • In surface-mounted housing IP68
  • In flush-mounted housing for switch boxes
  • Other special installations
  • IP-protected

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Article no.: 80085063

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