The Advantech APAX-5000 analog input/output modules offers channel-independent configuration, signal type selection (AI has 12 channels and AO has 8 channels), sensor wiring burn-out detection, hot swap functionality and can be easily configured for different types and ranges of input/output to support versatile applications using the same utility software. Advantech’s analog input/output modules provide reliable functionality to satisfy your various needs. APAX-5028 Has following Parameters. 8-ch voltage and current output. Range: ±2.5 V, ±5 V, ±10 V, 0~2.5 V, 0~5 V, 0~10 V, 0~20 mA, 4~20 mA. Resolution: 14-bit.Short Circuit Protection.Isolation between channels and backplane.