Specially design for farm, chick breeding, or other livestock. Heat preservation devices, excellent for winter or cold weather use. Waterproof and explode proof, energy saving and reduce consumption. Adopt short-wave infrared ray, quick warm and great photo permeability. Offer low brightness but high heat. Professional design will offer you wonderful using experience. Durable, LongLife, high quality, even heat dissipation, excellent for animal living. 4 types of power can be optional.