This package includes 1x SM-22RCI Interlinked Remote Control, 1x SM-22HI Interlinked Heat Alarm, and 2x SM-22SI Interlinked Smoke Alarms. The set comes with mounting brackets, screws with wall plugs, a user manual, and a quick start guide. Powered by SAFE-TECH, a brand trusted by hundreds of electrical wholesalers, this bundle is fully compliant with The New Scotland Regs (Feb 2022), New England Regs (Oct 2022), and Wales regulations. The interlinked alarms are certified to BS EN14604:2005 and BS 5446-2:2003, ensuring reliable fire detection. Utilizing Mesh RF technology, these alarms connect up to 50 devices wirelessly; when one alarm sounds, all connected alarms will sound. The included remote control allows for remote pairing, testing, and silencing of the alarms, and is exclusively compatible with SAFE-TECH SM Series Interlinked Alarms. Installation is quick and simple with a comprehensive quick start guide, video installation support, and a dedicated UK telephone support line. Please note that battery life may vary based on configuration and usage. Actual product size and color may vary slightly from images shown.