Our websites use cookies on your device to give you the best user experience. By using our websites, you agree to the placement of these cookies. To learn more, read our privacy policy.

DALI Sensors and other input devices

DALI Sensors and other input devices

Sensors and other input devices are specified in Parts 301-304
Parts 305 and 306 are in development
DALI-2 certification is available for devices implementing one or more of Parts 301-304
To find DALI-2 products in the database, select the following filters:
>> In the Product Search box, select Input devices
>>Select required Part number(s)

Input devices are one of the two main types of control device; the other type are application controllers. 

Input devices are fairly simple devices that provide information to the lighting-control system. Sensors provide information, such as light levels or movement, to enable automated control, while other devices such as push-buttons, sliders and rotary controls allow users to make adjustments. 


Technical details

Input devices are multi-master, meaning that multiple devices can share use of the DALI bus.

Input devices are normally used in event-driven mode, but they can also operate by polling or by periodic transmission. 

Up to 32 “instances” can be in the same product (using one address)

  • An example is a sensor consisting of an occupancy sensor (303) and a light sensor (304)

Optional “feedback” feature can be used to control LED indicators on each instance, for example on push-buttons.

 


DALI-2 certification of input devices

Input devices including sensors were added to the DALI-2 certification program in May 2019. 

All DALI-2 certified products are listed in the Product Database

As control devices, all DALI-2 input devices implement Parts 101 and 103 of IEC 62386. In addition, one or more of the following Parts are implemented:

Part number Type of input device Status
301 Push buttons Available for DALI-2 certification
302 Absolute input devices
303 Occupancy sensors
304 Light sensors
305 Colour sensors Specification in development (IEC)
306 General-purpose sensors Specification in development (IEC)

Background:

  • May 20: Input devices added to DALI-2 certification program
  • May 22: First DALI-2 input device is certified by Zencontrol
  • May 30: First certified DALI-2 sensors and other input devices added to Product Database
  • June 27, 2019 (Press Release): DALI-2 certification of sensors and input devices is now underway

Input devices by type

Part 301: Push-buttons
Various events can be sent:
  • Press
  • release
  • short-press
  • long-press
  • double-press
  • button-stuck
Part 302: Absolute input devices
  • Simple on/off switches, or multi-position switches
  • Digital inputs
  • Analog inputs
  • Slider or rotary controls
  • Sends a “position” event
Part 303: Occupancy sensors
  • Movement or presence type sensors catered for.
  • Events can be triggered on state change to:
    • occupied
    • vacant
    • movement
    • no movement.
Part 304: Light sensors
  • Measure illuminance level
  • Programmable hysteresis to minimise bus traffic
  • Optional periodic events reporting the illuminance level