IC121L, 14HDBNB1AA (OEM);Controller XR02CX OEM!! XR40CX 4N0F7-U OEM!! XR30CX-5N0C1 XH240K XT120C 5C1TU TCFCBCD500 alternative XT121C-5C1TU, 2-Stage Digital NTC-Fühler (SN7S0300) VH620 XH10P (supply 9÷18Vdc, out put 4÷20mA); 18NBI XB570L-5N1C1X XR 20C -5N1C1 obsolete replaced by XR20CX-5N0C1 VH620 with buzzer XH10P (supply 15÷35Vdc - 12÷24Vac, out put 0-10Vdc); TX400 c16000704 XT121C-1C0TU