Carlo Gavazzi Energy Management Control Solution For Solar PV Application, Eos-Array Lite Output Unit, 12-28VDC or Self Power From VMU-ML, One Relay Out. Relay output unit suitable to be used in combination with VMU-ML module. VMU-O allows to add one relay output to a VMU-ML based system so to manage local alarms. Housing for DIN-rail mounting, IP40 (front) protection degree.