

The Orbis CIRCUMAT+ motion detector, reference OB137112, is an ultra-slim PIR sensor designed to automate lighting circuits through motion detection. It is surface-mounted on the ceiling and offers 360° coverage, with a detection field of up to 7 meters in diameter at a mounting height of 2.5 meters and up to 9 meters in diameter when installed at 3 meters.
Its compact design, with only 2.4 cm of thickness, allows discreet integration into the ceilings of homes, apartment buildings, offices, hotels, retail premises, and public buildings. It includes adjustable light level control from 3 to 2000 lux, a time delay from 10 seconds to 30 minutes, pulse function, temperature compensation, and a relay with zero-cross switching for use with LED, fluorescent, and low-energy loads.
The CIRCUMAT+ uses passive infrared PIR detection to capture variations in thermal radiation produced by people or other heat sources moving within its coverage area. The sensor does not emit radiation to perform detection.
Thanks to its central ceiling installation and 360° coverage, it can monitor movement all around the detector, making it especially suitable for corridors, landings, entrances, rooms, bathrooms, offices, and other indoor passage areas.
Installed at a height of 2.5 meters, Orbis specifies a detection field of up to 7 meters in diameter for transverse movement. The official rating also differentiates an approximate field of 3 meters in diameter for frontal movement toward the detector.
When installed at 3 meters height, coverage can reach up to 9 meters in diameter under temperature conditions below 24 °C. Orbis recommends a mounting height of approximately 2 to 4 meters.
The CIRCUMAT+ is designed for direct surface mounting on the ceiling. Its oval housing and white front panel have a profile of only 2.4 cm, reducing the visual impact compared with bulkier ceiling detectors.
This construction makes it possible to install it without recessing the main body, making it especially practical for renovations or ceilings where there is not enough space to house a recessed detector.
The time during which the circuit remains on after motion is detected can be adjusted between 10 seconds and 30 minutes. The selected time restarts each time a new detection occurs.
The setting includes positions of 10 seconds, 1 minute, 3 minutes, 7 minutes, 15 minutes, and 30 minutes, allowing the detector’s behavior to be adapted to the actual use of each room.
In addition to conventional timing, the CIRCUMAT+ includes a pulse function. In this mode, it activates the output for approximately 1 second and then sets a minimum no-detection period of about 9 seconds.
This function expands integration possibilities when the detector is used to send an activation pulse to other compatible mechanisms or control systems.
The integrated light sensor allows you to select the ambient light level below which the detector should operate. The range can be adjusted between 3 and 2000 lux.
With a low setting, lighting will switch on mainly in darkness. If set toward the maximum level, the detector can react in practically any lighting condition. This makes it possible to avoid unnecessary switching on when there is sufficient natural light.
The CIRCUMAT+ is supplied with a field limiter that can be trimmed to exclude certain areas from the sensor’s coverage.
This is useful when the detector is located near doors, secondary corridors, or other areas where movement should not trigger the lighting.
Orbis equips the CIRCUMAT+ with temperature compensation to maintain more stable detection under changing environmental conditions. As with any PIR sensor, the range may be reduced when the temperature of the detected person or object approaches ambient temperature.
The unit incorporates zero-cross switching, a feature especially suited for working with electronic loads such as LED lighting, fluorescent lamps, and low-energy lamps.
Switching takes place at a point close to the zero crossing of the voltage waveform, helping to reduce electrical stress caused by inrush currents in certain loads.
The CIRCUMAT+ has a contact breaking capacity of 6 A at 230 V AC with cos φ = 1. The recommended maximum loads depend on the lighting technology used.
Reference OB137112 operates with a 230 V AC ±10% power supply and a frequency of 50/60 Hz. Its own consumption is approximately 0.8 W, equivalent to 5.2 VA.
The unit includes a double neutral terminal to make wiring easier during installation.
The CIRCUMAT+ has an IP20 protection rating according to EN 60529 and Class II protection when correctly installed. It is mainly intended for indoor installations protected from water.
Its normal operating temperature range is between -20 and +40 °C, with an operating limit specified up to +50 °C.
Its circular coverage, ultra-slim design, and ability to work with different lighting technologies make it suitable for use in many indoor spaces:
The Orbis CIRCUMAT+ OB137112 combines 360° coverage, an ultra-slim format, and adjustable time and light settings in a detector especially suited to automating ceiling lighting. Its range of up to 7 meters in diameter at a height of 2.5 meters allows it to effectively cover numerous indoor spaces from a single point.
Compatibility with LED loads up to 500 VA, zero-cross switching, the field limiter, and the pulse function provide flexibility for both new installations and renovation projects.
Important: the CIRCUMAT+ has IP20 protection and is intended for indoor spaces protected from water. Actual range may vary depending on mounting height, ambient temperature, and the direction of movement relative to the detector beams.