Enhance your home security with the Aico Ei411H RadioLINK Alarm Control Switch, a seamless addition to your existing smoke and gas detector system. This high-quality, white RadiloLink alarm control switch comes complete with one battery, ensuring that you can set up your system promptly without any delays. Designed for convenience and reliability, the Aico Ei411H model is crafted to provide you with utmost assurance in the event of an emergency. It operates effortlessly with a battery power source, and rest assured, this product is not part of any custom bundle, ensuring you receive the authentic experience as intended by Aico, a brand synonymous with trust and innovation in home safety.