Motion detector SATEL TOPAZ miniaturized PIR sensor model TOPAZ (3901)

Miniaturized PIR motion detector SATEL TOPAZ (model 3901) is a compact passive infrared sensor designed to detect human presence and movement indoors. Intended for integration with alarm systems, the TOPAZ sensor provides straightforward motion detection in a small form factor that supports discreet installation in homes, offices, and other interior spaces. The device monitors changes in infrared radiation caused by moving heat sources and outputs a detection signal suitable for security control panels.

Advantages

The SATEL TOPAZ miniaturized PIR sensor combines a small mechanical footprint with reliable passive infrared detection. Its compact design allows for unobtrusive placement while maintaining sensitivity to human motion. The unit is compatible with standard alarm system inputs and offers simple installation and wiring. As a purpose-built indoor motion detector, it balances detection performance and low visual impact to suit locations where aesthetics and space are important.

Suitable for

• Indoor perimeter detection inside residential and commercial buildings
• Integration with wired alarm and security control panels
• Discreet motion sensing in corridors, storage rooms, and small offices
• Supplementary detection in multi-sensor security zones

Key specifications

• Sensor type: passive infrared (PIR)
• Form factor: miniaturized/compact
• Intended environment: indoor use
• Detection target: human presence and movement
• Output: detection signal compatible with alarm system inputs

How to use

Install the SATEL TOPAZ sensor at the recommended height and orientation for the monitored area, avoiding direct exposure to air vents, heating elements or strong sunlight that could affect performance. Connect the unit to the alarm control panel or input module following the panel manufacturer’s wiring diagram, ensuring correct power and signal connections. After installation, test the sensor by walking through the coverage area to verify detection zones and adjust placement as needed to achieve reliable coverage without false alarms.

Usage recommendations

For consistent performance, mount the detector on a stable surface at the height suggested by the control panel or installation guide, keep the lens clean of dust and debris, and avoid pointing the sensor at moving objects such as curtains or fans. Use the SATEL TOPAZ as part of a broader security layout that includes complementary detectors and properly configured alarm inputs for optimal coverage and reduced false triggers.