There are two main types of smoke alarm tech, says Raman Chagger, principal consultant at BRE, the Building Research Establishment. Ionisation-based systems use a tiny amount of radioactive material to charge, or ionise, particles in the air which flow between two small plates. Should smoke interrupt that flow of charged particles, the alarm goes off.
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The existing NVIDIA Shield Android TV Pro remains our pick of the best streaming devices for gamers, thanks to its ability to stream in native 4K and effectively upscale lower-resolution content. And with NVIDIA’s GeForce Now cloud gaming service going from strength to strength, the Shield retains a unique position in the PC gaming ecosystem.