The SF201/200 series is suitable for security, process control and industrial applications.
These beacons are of the Static mode type (single stage alarm).
Once the beacon is energised the Incandescent/Halogen lamp will stay permanently on. An advantage of this type of beacon is that it can be controlled via a remote source (ie control panel / plc etc ) giving the beacon greater flexibility and offering a (flashing) second stage alarm.
The design allows for termination inside the enclosure through the base. The lower wattage units incorporate a Fresnel lens to maximise light intensity.