Optical / thermal analogical sensor route radius equipped with base of siren. Designed, made and certificate according to procedure EN54-3, EN54-5, EN54-7 and EN54-25. Compound of chamber of optical detection for reflection of light and of circuit thermistor of high definition, led warning of alarm and device of automatic blockade. Way of eligible operation from the head office (only optical, alone thermal or multisensor). Protection degree IP23. Mounted on framework of plastic ABS with base of included siren, of measures Ø 146 x 94 mm. Frequency of work of 868MHz.