The HotSpotter™ is a hand-held instrument designed for the fire service. It was invented, designed, developed and is owned by Product Innovation Ltd. It enables firefighters to locate Hot Spots at a distance (using Infrared radiation) and hence be able to extinguish fires more efficiently. As a Hot Spot is scanned the HotSpotter™ lights up a row of LED’s, and more importantly raises the pitch of the output sound. It works rather like a Geiger counter, but for Infra Red radiation. It is sold all over the world to distributors in the Fire business. It is available in two versions: Standard and Intrinsically Safe.