I have used this Voltage Stabilizer for a very short time. It is of very high quality and the transformer is made of copper (you can open it and check when purchasing). There are no issues with it. You can use this stabilizer with a fridge, a computer, or a washing machine. This machine provides protection against high and low voltage and has a 6-7 minute delay time set. I don't need it anymore, so I want to sell it. The price is set much lower than the market value. Thank you. Location: Jatrabari, Dhaka.