The FLZ thermostat series consists of three variants. They are designed as normally open, normally closed, and changeover switches. In combination with control cabinet heaters, they serve to regulate the temperature within the cabinet. When used with filter fans, they contribute to additional savings in energy, materials, and time, thereby improving the environmental balance. Overall, this results in greater safety in the production process, reduced energy consumption through demand-oriented use, and an improvement in the efficiency of the controlled heaters and filter fans.