This system displays the position of individual cows in the barn with ease, detects the heat and detects animals with possible health problems, making individual animal care manageable – no matter how big the herd is. The design is animal friendly, high tech, robust, water-tight, durable and withstands the pressures of the barn environment. The yellow bumper protects the electronics housing. The ergonomically shape and weight keep the tag in its optimal position under the cow’s neck. The tag automatically alerts the farmer if it is hanging in the wrong position.