Thermal detector of 77 º of class B for conventional systems. Designed, made and certificate according to norm EN54-5. With certificate of homologation LPCB. Compound of a circuit thermistor of high definition, warning LED of alarm, gone to remote indicator, device of automatic blockade. Mounted on framework of plastic ABS of measures Ø106 x 52 mm. It includes protective cover for work. It does not include base.