These heat mats fulfill all wishes of demanding reptile keepers. They are waterproof and have a insulation for protection. A special heat conductor ensures an even surface heat. The Thermo Mat PRO is excellent for use in wet surroundings. In addition the heat mat has a special overheat protector which switches off the heat mat in case of too high temperatures (e.g. local overheating because of unsuitable substrate). This minimizes the danger of fire and the risk of damage to the terrarium floor. However it is essential to use the right substrate and have a correct installation, as the heat mat cannot heat properly otherwise.