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The AlarmSense Optical Smoke Detector with Visual Sounder Base is part of Apollo’s range of two-wire detection and alarm products, encompassing both optical and heat detectors in addition to sounder bases and sounder beacon bases, a MCP and alarm relay equipment. AlarmSense works via connection to a single pair of supply wires. This benefits both the installer and the end-user by making installation easier and quicker, less expensive and more adaptable as you do not have to run separate sounder circuits.