Key Features :
Over volt protection, under volt protection, wall mountable. Key parameters / features : technical specification voltage indicator : 7 segment display, auto low & high cut : yes, time delay : yes (10 sec.), low / high indication : below < 130vac above > 280vac, restart : above > 130vac below < 275vac, operating voltage input : 130vac to 280vac, operating voltage output : 185vac to 250vac, rated frequency : 50 hz, gross capacity : 12 a ;for 1.5t ac, tolerance: + 5 vac.