The LED201/200 and LED401/400 series are suitable for security, process control and industrial applications, where low maintenance and long life are the pre-requisite requirement. These beacons offer a four stage alarm option, selected by a four way switch on the PCB: 1. Continuous mode 2. Flashing mode at 1Hz 3. Rotating mode: Twin column 4. Rotating mode: single column An advantage of the continuous mode is that it can be controlled via a remote source (ie. control panel / plc etc) offering the potential of a remote flashing option. The design allows for termination inside the enclosure through the base.