You can use 2 (old) Analogue devices on port 5 and 6 of the Manager IQ Easy. This can be the ThunderION or Performax IQ Easy. These devices will get the 24V from the manager and will indicate the HV OK signal from the bar to indicator if the bar is functioning OK. (Not OK means red Warning) The bars can be set to run or standby or switched with remote on/off via the Manager IQ Easy.