10 Important Notes WAGO I/O-SYSTEM 750753-454 2AI 4-20mA Diff.ManualVersion 1.1.0Appropriate housing (per 94/9/EG) is required when operating the WAGO-I/O-SYSTEM 750 in hazardous environments. Please note that a prototype testcertificate must be obtained that confirms the correct installation of the system ina housing or switch cabinet.2.1.4 Technical Condition of Specified DevicesThe devices to be supplied ex works are equipped with hardware and softwareconfigurations, which meet the individual application requirements. WAGOKontakttechnik GmbH & Co. KG will be exempted from any liability in case ofchanges in hardware or software as well as to non-compliant usage of devices.Please send your request for modified and new hardware or softwareconfigurations directly to WAGO Kontakttechnik GmbH & Co. KG.