Wireless noise enters the sensing environment.
Dense connected spaces create more opportunities for multipath reflections, spurious emissions and cross-channel disturbance.
Robust HF Sensors · Smart Anti-Interference
Stable detection,
even when the air is crowded.
Hytronik’s robust 5.8 GHz HF architecture separates genuine motion from wireless noise—helping lighting stay responsive, predictable and easier to maintain in connected buildings.
The customer problem
False triggers do not stay a sensor problem.
Modern buildings carry Wi-Fi, Bluetooth, cellular and other RF traffic through the same spaces where sensors must make a clean motion decision. If that decision becomes unstable, the cost spreads through the project.
Hytronik brings nearly two decades of HF sensor experience to a robust antenna and signal-processing design built for today’s wirelessly dense environments.Lights react when genuine motion is not present.
False triggers, erratic switching or extended on-time are what occupants and facilities teams actually experience.
Energy-saving intent starts to drift.
Lights that stay on unnecessarily undermine occupancy-led control and the project’s expected operating efficiency.
Teams chase a fault they cannot see.
Repeat visits, setting changes and unnecessary hardware swaps turn interference into a maintenance loop.
Occupants stop trusting the control system.
A smart building only feels smart when lighting behaves consistently and without drawing attention to itself.
Why robustness mattersIn an office, mall, airport or industrial site, stable detection protects energy performance, maintenance time and confidence in the whole lighting system.
Next-generation 5.8 GHz HF architecture
The sensor listens for motion—not the surrounding wireless conversation.
A robust antenna design, signal discrimination and electromagnetic protection work together to reject disturbance before it becomes a lighting command.
Wi-Fi trafficBluetoothCellular / 5GOther RF
5.8 GHzSignal discrimination
Valid outputGenuine motion Doppler shift
Robust RF architecture
The 5.8 GHz HF antenna is engineered for reliable operation in buildings carrying many wireless services.
Precision signal discrimination
Signal processing rejects multipath reflections, spurious RF emissions and cross-channel noise before a decision is made.
Electromagnetic robustness
Circuit shielding and adaptive anti-interference algorithms help suppress EMI/RFI in commercial and industrial installations.
RED and ETSI tested
The design is tested against relevant radio-equipment requirements to support dependable, compliant project integration.
The animation explains the design intent rather than exposing proprietary processing steps. Final detection performance depends on the selected product, mounting position, sensitivity settings, surrounding materials and site commissioning.
From signal to lighting command
Four checks between a busy airspace and a calm result.
The engineering focus is simple: prevent ambient RF disturbance from being interpreted as occupancy, while keeping genuine movement responsive.
Read the RF environment
The antenna receives reflected HF energy from the monitored space.
Reject interference patterns
Anti-interference processing filters disturbance that does not match the required motion signature.
Validate the Doppler shift
Only a legitimate movement response is carried forward into the occupancy decision.
Make a clean lighting decision
The selected product applies its configured switching, dimming or control behaviour.
For installers
Commission once. Troubleshoot less.
Reduce time spent chasing phantom triggers, revisiting sensitivity settings or replacing devices that were not at fault.
For occupants
Lighting that behaves naturally.
Responsive illumination without unexplained switching, distracting flicker or a system that calls attention to itself.
For project teams
Performance that scales with the building.
Protect energy-saving intent and operational confidence as connected devices and wireless services increase.
Choose by space and mounting height
The same anti-interference principle, matched to different projects.
Select the sensor by control method, mounting height, installation format and application—not by antenna technology alone.
Stable low-bay detection around everyday wireless traffic.
Compact built-in sensing suits ceiling luminaires and sensor-light formats across occupied learning and workplace spaces.
Dependable response across busy shared spaces.
Low-bay sensing can be integrated into ceiling luminaires while the control method is selected around the project.
Wireless resilience for large, connected installations.
Zhaga Book 18 high-bay sensor options suit compatible UFO luminaires and demanding industrial mounting heights.
Products featuring robust HF antenna design
Five products. Three clear installation paths.
Compare built-in low-bay sensors for ceiling luminaires, a plug-in low-bay sensor head, and high-bay options for compatible UFO luminaires.
Built-in low-bay · ceiling luminaire
HC005S
ON/OFF control with DIP-switch setup and photodiode.
View product →
Built-in low-bay · ceiling luminaire
HCD405/BT
Bluetooth DALI control with integrated PSU and Photocell Advance.
View product →
Plug-in low-bay sensor head
SAM20
RJ12 sensor head with daylight-harvesting capability.
View product →
High-bay · UFO luminaire
SAM15
DALI high-bay option in a Zhaga Book 18 format.
View product →
Bluetooth high-bay · UFO luminaire
SAM15/BLE
Bluetooth, DALI-2 and D4i high-bay control.
View product →Not sure which robust HF sensor fits the installation?
Talk to a Hytronik specialist about mounting height, luminaire format, detection pattern, control method, wireless conditions and project commissioning.