Switches that can see
STEINEL Infrared sensors respond to heat radiated from moving persons and use this ability, for example, to switch a light 'ON' and, after a selectable period of time, 'OFF'again.
Switched-on lighting technology
Photoelectric lighting controllers switch 'ON' light in relation to ambient brightness. An integrated light sensor automatically switches the connected light 'ON' at dusk and 'OFF' again at dawn. This makes them the ideal solution for any lighting system:
Light 'ON'. Light 'OFF'.
Automatic lights are created by using motion sensors. This is where two different technologies are employed: HF-sensors (see page 76) are the ideal solution for indoors. Outdoors, only passive infrared (PIR) sensores are used.
Heat radiation as a remote controller
The heart of a PIR sensor system is what's called a pyro-sensor. This electronic component responds to any fluctuation in incident infrared heat radiation with a change in voltage.As all individuals give off infrared radiation through body heat, they automatically change the thermal image detected by the sensor on entering the system's field of vision. The sudden rise in voltage this causes is processed by the electronics for switching 'ON' light.
For sensor systems to respond to movements within the detection zone, they are equipped with a segment lens. This divides the pyrodetector's field of vision into active and passive zones (zones not visible to the sensor). When a heat source crosses a zone boundary, the IR radiation received changes for the sensor which then emits a signal.
STEINEL has developed the multisensor system for applications placing particularly exacting demands on the size of the detection zone. Within the system, two or even three pyro-sensors are positioned at a specific angle to each other that adds their detection zones together.
STEINEL multi-lens technology
Multi-lens technology (MLT) provides uninterrupted coverage of a semi-spherical detection zone. This makes it the ideal lens system for motion detectors with double or triple sensors.
Fresnel lenses provide the simplest means of segmenting the detection zone of an infrared detector. A system of individual lenses is arranged here in the form of an arc. With a maximum coverage angle of 180°, they can watch over an area of up to 225 m2. A second optical window below the main detection zone makes it virtually impossible to creep past underneath the sensors without being detected.
STEINEL sensors generally provide a max. reach of 12 m that may be shorter when walking in a radial direction (towards the sensor).
Elegant, efficient and intelligent
Developing the mini-sensor, STEINEL has adopted a whole new approach to creating PIR sensor systems. A pherical segmented mirror guides ambient IR radiation onto a state-ofthe- art and extremely efficient IR sensor chip. This configuration not only makes it possible to keep the system extremely small, it also permits the reliable detection of movement in a full 360° circle.
The new operating concept
To permit rapid, intuitive adjustability of the sensor electronics to individual user needs, the entire sensor module can be taken out of the light, set in your own time, plugged back in again and securely locked in place.While settings are being made, the light switches itself 'ON' as soon as the sensor is removed. This is practical at twilight or during the night. All of the information you need to know is printed in the sensor module itself, obviating the need for any operating instructions.
STEINEL sensors with a coverage angle of less than 180° are equipped with lenses that can be tilted and turned for exact adjustment to the situation at the point of installation.
All sensors come with shrouds that can be cut to size for limiting detection zones (e.g. next to neighbouring property / roads).
A control dial can be used for infinitely varying brightness threshold from 2 lux (night) to 2000 lux (day). This prevents light from coming 'ON' unnecessarily during the day.
Adjustable to any period from 5 sec. to 15 min. to suit specific needs. After detecting movement, the light stays 'ON' for the period selected
Watt-o-matic (brightness control)
Provides the capability of adjusting basic brightness from 0 – 50% of SensorLight output. When movement is detected, the SensorLight switches to full power. Shows the way from a distance and frightens off uninvited guests.
Soft light start and soft end
Elegantly increases output from the lamp in the SensorLight to 100% power. That's kind on the eye and helps to prolong lamp life!
Many of STEINEL's SensorLights can be set to stay 'ON' permanently for 4 hours by operating a switch twice. Afterwards, the light automatically returns to sensor mode.