Product Description 6ES7131-7RF00-0AB0SIMATIC, electronic module, for ET200iSP, 8 DI NAMUR, Ex ib (ia Ga) IIC T4 Gb, Ex ib [ia IIIC Da] IIC T4 Gb, Ex ib [ia] I Mb Design * The digital electronics modules are installed on terminal modules which must be ordered separately. * TM-IM/EM60 terminal modules for one interface module and one watchdog, reserve or electronics module (for versions, see section Interface module) * TM‑EM/EM60 terminal modules with two slots for watchdog