18.5K.9.030.0000 Finder PIR With KNX interface DC 30V

Why Choose the Finder 18.5K.9.030.0000 KNX PIR Movement and Presence Detector?

The Finder 18.5K.9.030.0000 is an intelligent PIR movement and presence detector with integrated KNX interface designed for building and home automation applications. Part of the Finder 18 Series, it combines sensitive occupancy detection, ambient-light measurement and KNX bus communication for automated control of lighting, HVAC and other building services.

The detector is powered directly from the KNX bus at a nominal 30 V DC, with an operating bus voltage range of approximately 21–32 V DC SELV. At a typical installation height of 3 m, it provides two detection zones: an 8 × 8 m movement area and a more sensitive 4 × 4 m presence area capable of responding to smaller movements.

The 18.5K.9.030.0000 provides configurable KNX functions including load-control outputs, movement and presence status, ambient-light measurement and adjustable PIR sensitivity. Its light-level measurement range extends from approximately 1–1500 lx, while configurable timing and Master/Slave functionality provide flexibility for larger or more sophisticated building automation installations.

Key Advantages

• Integrated KNX interface for building automation systems.
• Powered directly from the KNX bus at nominal 30 V DC.
• Combined PIR movement and presence detection.
• Large 8 × 8 m movement detection area at 3 m installation height.
• Sensitive 4 × 4 m presence detection area for detecting micro-movements.
• Configurable outputs can support lighting and HVAC control.
• Ambient-light measurement enables daylight-dependent automation.
• Adjustable PIR sensitivity and configurable timing through KNX.
• Master/Slave capability can extend the effective detection area.
• Compatible with ETS configuration software for KNX commissioning.

Key Features

• Finder 18 Series KNX PIR detector.
• KNX bus communication interface.
• 30 V DC nominal bus supply.
• KNX bus operating voltage approximately 21–32 V DC SELV.
• Combined movement and presence sensing.
• 8 × 8 m movement detection zone at 3 m mounting height.
• 4 × 4 m presence detection zone at 3 m mounting height.
• Maximum movement coverage of approximately 64 m².
• Ambient-light measurement range of approximately 1–1500 lx.
• Adjustable PIR sensitivity.
• Configurable movement monitoring and switch-off timing.
• Master/Slave function for expanded detection coverage.
• Movement and light-level information available through KNX.
• IP40 degree of protection.
• Suitable for recessed, suspended-ceiling and surface installation.

Intelligent KNX Occupancy and Building Control

The Finder 18.5K.9.030.0000 combines PIR sensing and ambient-light measurement with direct KNX bus communication. Movement, presence and illumination information can therefore be incorporated into a KNX building automation strategy, allowing lighting, HVAC and other services to respond automatically to occupancy and environmental conditions.

The detector provides separate movement and presence areas, making it effective both in circulation spaces and in workplaces where occupants may remain seated with only small movements. Adjustable sensitivity, configurable timing and Master/Slave operation allow the detector to be adapted to different room layouts and automation requirements through the KNX system.

Typical Applications

• KNX building and home automation systems.
• Automatic office and workplace lighting control.
• HVAC control based on room occupancy.
• Classrooms, schools and educational buildings.
• Meeting rooms and conference facilities.
• Hotels and commercial buildings.
• Common areas and circulation spaces.
• Daylight-dependent lighting automation.
• Large detection areas using Master/Slave configurations.