Explosion-proof regulation thermostats suitable for hazardous areas, made of aluminium alloy, painted RAL7000. The TA series room thermostats feature a liquid expansion probe suitable for automatic room temperature regulation. They are available both in the external adjustment version (type TA) and the internal adjustment version (type TAI). The TR series regulation thermostats feature a liquid expansion probe. They are recommended for automatic temperature regulation of liquids and for industrial heating applications. They are available both in the external adjustment version (type TR) and the internal adjustment version (type TRI).