In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — ...

NEW YORK – As states grapple with COVID-19, a walkie-talkie device, originally designed for kids by Raleigh startup Relay, has become an unexpected hero in some intensive care units (ICU).

Relay devices are available in five different colors and upon activation, are given a unique auto-generated name that is spoken each time the “channel” button is pressed.