Grobag Egg, the colour changing digital room thermometer, is another clever innovation from the people who brought you Grobag Night Light. Room temperature is vital in creating a safe sleeping environment for a baby & should be maintained at 16-20°C to help reduce the risk of cot death. The Grobag Egg is a quick, easy & effective way to monitor room temperature, combining a thermometer with a soft nightlight glow. When the room temperature drops below 16°C the yellow light will change to blue to indicate that it's too cold, if the room temperature is 20-24°C the yellow light changes to orange & then red over 24°C. Create a charming nightlight to sit perfectly in the sweetest of nurseries, by combining the Grobag Egg with the Gro Egg Shell (sold separately). Available in ' Percy' the Penguin or ' Orla' the Owl, the shell outer transforms the egg into a sweet character nightlight. Simple to use room thermometer changes colour to indicate temperature Gro-Egg Shell sold separately Digital room thermometer with permanent 'back lit' LCD readout Provides a soft 'nightlight' glow Mains power adapter included Instructions & safe sleep guide enclosed