IM1-121EX-R. The 1-channel isolating switching amplifier. IM1-121EX-R is equipped with an intrinsically safe input circuit. IM1-Ex-R/Ex-T/Ex-MT ì ì 5 / 12 Wichtige Hinweise zum Einsatz von Geräten mit eigensicheren Strom kreisen Das vorliegende Gerät verfügt an den blau ge Functions and selection guide IM1-22Ex-MT IM1-121Ex-R IM1-231Ex-R IM1-451Ex-R. [ Ex ia ] Analog data transmitters/ intrinsically safe input isolators. IM1-121EX-T Isolating switching amplifier, 1-channel, TÜV 04 ATEX 2553 ; Manufacturer code. 7541230 ; Rated supply voltage at DC. 20 - 125 V ; Number of inputs, Product IM1-121EX-R ; Country of origin, DE ; Weight, 171 g ; Signal type, Digital input ; Device type, Isolating switching amplifier ; Ex version, yes. View online or download PDF (491 KB) turck IM1-231Ex-R Quick start Guide with alarm output • Intrinsically safe input circuits Ex ia • Area of Turck Im1-12-R Online-Anleitung: Purpose And Scope. with the required failure data as per IEC 61508 / IEC 61511 and does not include an.