Wearable doorbell notification for deaf people / Hafiqa Eliya Haliza by Haliza, Hafiqa Eliya

“…Wearable Doorbell Notification for Deaf People is a wearable device to alert the deaf people who supposed to be the wearer of the device whenever there are people pressed their doorbell by using the wireless technology, nRF24L01 wireless module and Arduino Nano to produce the device with additional components such as push button, LED, LCD and vibrating motor. …”
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THE FRONT DOORBELLS IN TAT’JANA TOLSTAJA’S STORIES: THEIR DESIGN AND CULTURAL MEMORY by Giulia Baselica

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COVID bell – A smart doorbell solution for prevention of COVID-19 by Gudipalli Abhishek, Kejriwal Vaibhav, Patel Vaishnavi, Gupta Riddhi, Dixit Utkarsh

“…An ultrasonic sensor is integrated with the automated doorbell system to ring the doorbell with a hand motion. …”
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The Cop In Your Neighbor's Doorbell: Amazon Ring and the Spread of Participatory Mass Surveillance by Calacci, Dan, Shen, Jeffrey, Pentland, Alex

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Doorbell image capturing with notification via SMS and email / Faizal Afiq Mohd Noor by Mohd Noor, Faizal Afiq

“…However, the doorbell system has several problems which is a user cannot be heard or alert the sound of the doorbell from source point. …”
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Design of a smart doorbell for a leader’s office with availability status notification and visitor recognition features by Khac-Nguyen Nguyen, Chanh-Nghiem Nguyen, Huu-Danh Bui, Minh-Tuong Tran, Chanh-Nghia Lam, Quoc Bao Truong, Hoang Dung Nguyen, Chi Ngon Nguyen

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Viability characterization of a proof-of-concept Bluetooth mesh smart building application by Leonardo Eras, Federico Domínguez, Caril Martinez

“…To explore the viability of Bluetooth mesh profile in home/building automation applications, we built the Smart Doorbell: a proof-of-concept Bluetooth mesh profile–based visitor notification system for office spaces. …”
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Smart home and thermal imaging technology for COVID 19 detection using the Internet of Things (IoT) by Ismael, Ahmed Jameel, Abdul Rahim, Herlina, Ghazali, Rashidah, Naji Mezher, Khalid

“…If the doorbell detects a temperature, it will trigger a sound and illuminate corresponding LED lights to warn the visitor. …”
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Electrical house wiring [filemjalur]

“…Running wire -- 5. The Doorbell : installation and troubleshooting…”

INTIMATE FALLS ; A Brandon Drake Novel / by Rucker, Lance M., 1948-, author 641287

“…Until Julia Hobbs rings his doorbell. Suddenly, Brandy is back in the P. I. business with a vengeance. …”

Can med cause blurred vision, hearing loss, and more? by Daily Express, (KK)

“…WE rely on our senses to help us navigate the world—to read a book, hear a doorbell, or pick up the warning signs of a gas leak. …”
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When the Kids Move Back Home by Lynda Spence, Larry Forthun

“…With intergenerational cohabitation on the rise, it’s a good idea to examine the “what-ifs” before the doorbell rings. If you find yourself making up spare rooms for your grown children or even their children, you will be glad you thought about the issues in advance. …”
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Development of Modified Vo2Max Test Instrument by Muhamad Syamsul Taufik, Claudia Florina, Yasep Setiakarnawijaya, Budi Ariyanto Muslim, Widiastuti Widiastuti, Aridhotul Haqiyah

“…The basic circuit included sensors, WiFi modules, RGB LEDs, and a doorbell. The function of the sensor was to detect objects in the sensor area. …”
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Intelligent Detection of IoT Botnets Using Machine Learning and Deep Learning by Jiyeon Kim, Minsun Shim, Seungah Hong, Yulim Shin, Eunjung Choi

“…We use the N-BaIoT dataset generated by injecting botnet attacks (Bashlite and Mirai) into various types of IoT devices, including a Doorbell, Baby Monitor, Security Camera, and Webcam. …”
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Caídas: adherencia a las medidas de prevención en un hospital de alta complejidad by Carolina de Elia, Lourdes Legaz, Marina Popken, Sofía Santa Ana, Soledad Nieto, María Maluenda, Mariana Seisdedos, María Victoria Brunelli

“…During a later analysis, we observed that the measurements blue dot bracelet, blue dot door, brakes, height, railings, education, doorbell and telephone; increased. Meanwhile, the prevention measure in relation to the educational material provided to the patient, decrease in its level of adherence.      …”
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Avaliação dos benefícios proporcionados pelo AASI em crianças e jovens da faixa etária de 7 a 14 anos Assessment of benefit of hearing AIDS in children and young people from ages 7... by Cibele Cristina Boscolo, Maria da Piedade Rezende da Costa, Camila Maria Pereira Domingos, Fabrícia Cristina Perez

“…As to the benefits of using hearing aids in daily routine, 14 (73%) reported that this enhanced their hearing for television; 15 (78%) said they helped to hear the telephone or doorbell ringing; 12 (63%) could hear their parents calling their names better. …”
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The wireless notification system for the hearing impaired by Foo, Andrew Thai Hin, Mohamad, Elmy Johana

“…It alerts the user to signals such as smoke detectors and doorbells. These signals are connected to a centralized controller box, processed, and transmitted via a Radio Frequency link to the wireless wristband device. …”
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A switched-winding transformer with low quiescent loss to meet the level VI efficiency standard at high power density by Braun, Weston, Chen, Minjie, Perreault, David J

“…Many control and monitoring applications including thermostats, doorbells, and security systems utilize 60 Hz transformers with grid-voltage inputs and 16 V to 24 V ac outputs. …”
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