The Apollo 55000-392APO AlarmSense Optical Smoke Detector with Sounder Base is a high-quality fire protection device manufactured in the United Kingdom by Apollo. This smoke detector is designed to detect smoke and activate an alarm in case of a fire, providing a reliable and effective way to ensure safety in any business, office, or industrial setting. With its advanced technology and sounder base, this Optical Smoke Detector offers a comprehensive solution for maintaining fire safety and security in any commercial or industrial premises.