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Continue to ChatDEAF AND BLIND PEOPLE: DOORBELL ALERT SYSTEM AND HEALTH MONITORING | ijirt.org volume 5 issue 11, page 12 https://topresearchjournal.wordpress.com/2019/04/29/deaf-and-blind-people-doorbell-alert-system-and-health-monitoring-ijirt-org-volume-5-issue-11-page-12/