The DA180, having a 66mm diameter lens, provides extremely clear visual indication of process control conditions from a distance and from the side. Lenses are available in six super-bright colours and feature an integral current regulator to limit the current to 20mA. This ensures that all colours are matched to obtain consistent brightness across the range. Up to two LED Clusters can be driven from a single 11C power source. The lamps are designed to provide a minimum of 100,000 hours of service life.