Add to cart Temptag Tri Thermometer Sticker $40.64 Temptag Tri Thermometer Sticker is a milk thermometer giving greater control when steaming milk. Each pack includes 12 Temptag Tri Stickers with three colours – red, yellow and white. Every color indicates the type of milk in each pitcher. This milk thermometer gives instant indication when the milk is at its optimum serving temperature. It has three windows reacting at three different temperatures for any milk type.