Room temperature is vital in creating a safe sleeping enviroment for a baby & should be maintained at 16-20°C to help reduce the risk of cot death. Grobag Egg the colour changing digital room thermometer is another clever innovation from the people who brought you Grobag Night Light. When the room temperature drops below 16°C the yellow light will change to blue to indicate its too cold, if the room temperature is 20-24°C the yellow light changes to orange & then red over 24°C. Simple to use room thermometer that changes colour. Digital room thermometer with permenant back lit LCD readout. Provides a soft nightlight glow. Mains power adapter included. Instructions & safe sleep guide enclosed.