With the holiday season in full swing, lights and decorations are appearing on homes and businesses across Chicagoland. But ...

Let me introduce an improved version of a blackout alert beeper, which is, in fact, a low-cost mains failure alarm designed to help protect stock and equipment. This device, extremely useful when you ...

Light-emitting diodes (LEDs) are often used with a voltage source from a power-supply output voltage. The output voltage increases until the current through the LEDs reaches the value of the ...

Any time you are working with burglar alarm, access control, sound, nurse call, or intercom systems, as well as computer networks, lighting dimmer controls, and low-voltage industrial controls, you ...

A major power failure that hit Nottingham City Council’s headquarters at Loxley House in March 2025 caused widespread IT disruption and forced the authority ...