In industrial processes, precise temperature control is essential to guarantee quality, safety and energy efficiency. Various sensors are used to achieve this, depending on requirements: Pt100 probes, renowned for their accuracy and stability, thermocouples, suitable for high temperatures, or thermostats, used for simple regulation or as safety devices. These sensors transmit information to power regulation and control units, often incorporating PID controllers, solid-state relays or power contactors. They control the power of electric heaters, modulating or cutting off the power supply according to the temperature measured. These systems are indispensable in many industrial applications, such as temperature maintenance of molds in plastic injection molding, thermal regulation of reactors in the chemical industry, or cooking control in the food industry.