Automatic Voltage Regulator.
Model : TVR-1500VA Power : 1500VA Technology : Meter Display +C.R.G.O transformer Input Voltage Range : 150-270V Input Frequency : 50Hz Output Voltage : 230V ~ 50Hz High Voltage Protection : Yes Low Voltage Protection : Yes Overload Protection : Yes High Temperature Protection : Yes Dimension : 23x13,5x14 cm.