Flush-surface motion detector Aritech DC105 — combination dual-technology (PIR + microwave) recessed mounting

Aritech DC105 is a flush-surface combination motion detector that uses dual-technology sensing—passive infrared (PIR) together with a microwave sensor—designed for recessed mounting. The detector provides discreet, low-profile installation in ceilings or panels while requiring both PIR and microwave events to register movement, which reduces the likelihood of false alarms. Its compact design and dual-sensor logic make it suitable for indoor security and building automation where reliable presence and motion detection are required.

Advantages

The combination of PIR and microwave sensing in the Aritech DC105 improves detection reliability by cross-verifying thermal and doppler signals. Recessed mounting allows a near-flush finish that preserves interior aesthetics and reduces exposed hardware. Because the detector requires both sensor inputs to trigger an alarm, it minimizes false activations from environmental factors such as drafts, small temperature changes, or isolated radio reflections. The low-profile design also simplifies integration with suspended ceilings and finished surfaces.

Suitable for

• Indoor security systems in homes and apartments
• Office and commercial space intrusion detection
• Building automation for presence-based lighting and HVAC control
• Areas requiring discreet, recessed sensor installation

Key specifications

• Detection technology: dual-technology (passive infrared + microwave)
• Mounting type: recessed / flush-surface mounting
• Intended environment: indoor use
• Detection capability: presence and movement detection
• Design: low-profile, compact recessed housing

How to use

Install the Aritech DC105 in a suitable ceiling or panel cutout according to the mounting instructions provided by the manufacturer, ensuring the detector has a clear field of view of the monitored area. Connect the sensor wiring to the control panel or automation system following required wiring diagrams and power specifications. Configure sensitivity and any available settings per the system requirements so that both PIR and microwave channels operate correctly. After installation, test the unit by walking through the detection zone and verifying that the control panel receives the expected signals and that false activations are absent.

Recommendations

Position the detector to avoid direct air-conditioning outlets, heaters, or large reflective surfaces that could affect PIR or microwave performance. Use the recessed mounting to maintain aesthetics while ensuring the detection zone covers intended traffic paths. Periodically test the detector after installation and during maintenance checks to confirm proper dual-sensor operation.