The YL60/3 product series provides audible and visual alarm signals which can be used to alert, warn or draw attention to equipment malfunction/start-up or any number of safety-related issues in hazardous areas. The preconfigured signal tones and light patterns (LED) provide a wide range of internationally standardised signal patterns. The audible and visual signals can be operated separately or in combination, with four channels available for each type of signal, enabling flexible use. The signalling devices meet the requirements of EN 54 and DNV for extremely challenging ambient conditions.