Clifford & Snell is a world leader in the design and development of audible and visual signalling products, which includes a comprehensive range of Industrial and Hazardous area sounders, beacons and combination units. Clifford & Snell offers a comprehensive range of signalling devices addressing a wide variety of applications and industry sectors which include, hazardous areas, industrial & process control, through to fire protection, security, marine, mass evacuation and transportation.