An alarm sensor against a rise in temperature, brand HCT, made in China and of the traditional type. It works with a thermostat system. In the event of a fire occurring in the coverage area, it produces a rise in temperature that is sensed by the thermostat and sends an alarm signal to the alarm panel that is connected to it. It works on a 24-volt supply through the alarm panel that is connected to it. It works on all control units for the fire alarm system. It is equipped with 2 indicator lamps to allow visibility from all directions. It is suitable for kitchens and garages because it is not affected by smoke.