Optical / thermal analogical sensor route I remove. Designed, made and certificate according to procedure 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). Mounted on framework of plastic ABS of measures Ø106 x 52 mm. It includes protective cover of work. It includes base ZR401-3. Frequency of work of 868MHz.