Both Temperature heat detectors analyze the ambient temperature by the means of thermistor type CTN. TSC05 (static heat detector) is either classified A1S or BS according to EN54-5 standard: • TSC05-A1S: static T°=62°C±3°C • TSC05-BS: static T°=75°C±5°C TRC05 (static + rate of rise detector) is especially adapted for average ambient temperature conditions under +10°C. TRC05 is classified A1R according to EN54-5 standard: • Static T°=62°C±3°C • ΔT°>9°C/min Both types include a developed technology (microprocessors, smd components) which means precision and high reliability. A specific head detection fixed by a single ceiling base. 12V version of TRC05 & TSC05 detectors is also available for security type systems - Rate of rise + Fixed heat detector