British scientists say they have developed a ceiling-mounted Covid "alarm" that can detect anyone infected in as little as 15 minutes.

That’s it. Microwave-based motion sensor board on top, controller board for LED ceiling light underneath. The power adapter is straightforward in that it accepts 100-240 Volts AC and turns it ...

Xiaomi has introduced the Smart Ceiling Light D20 on its global website ... light's standout feature is its integrated smart ...