Are you looking for a Loud and Flashing Doorbell system for deaf and hard of hearing? You are in the right place. The Hard Wired 24V Doorbell Horn/Strobe Kit is an audible/visual signaling device that may be used in a variety of system configurations including commercial doorbell applications. We also have wireless doorbell systems as well. For more information and expert advice, call us at 1-866-889-4872.See more: https://www.hearworldusa.com/alerting-notification-systems/doorbell-door-knock-signalers/