TR250, relè di temperatura Pt 100/1000, KTY, PTC KTY, PTC, 3 sensori, 3 allarmi, 3 sensori Pt 100, Pt 1000, KTY 83/84, valori limite PTC3 Us AC / DC 24-240 V, collegamento plug-in terminalicURus UL-E337414