The Apollo XP95 Multi Tone Weatherproof Open Area Sounder is a reliable and durable fire alarm system designed for outdoor use. With its weatherproof construction, this sounder can withstand harsh weather conditions while providing a clear and effective warning signal in case of emergencies. The multi-tone feature adds an extra layer of safety by emitting different sounds for varying alert levels. Perfect for use in business, office, and industrial settings, this open area sounder from Apollo is a crucial component of any fire protection plan.