I bought an Inverter from Kongu Engineers three years back for my house use. The inverter is working fine and it gives very good backup during powercut. This inverter requires minimum maintenance. Their service support is excellent. I have recommended the product to many of my friends and every one is happy about this product.

we are one of the earliest customers of the kongu engineers range of ups and inverters and has recommended to many of our friends and business associates for their quality optimum price and service backup. The best support you can expect with a smile always from their side is the charismatic response. we use their range of products for the past one decade with best results.

We have purchased several Invertor's from Kongu Engineers for most of our stores & it is works without any trouble for last couple of years. The most impressive part is that, they do same level of service care even for products that are not supplied by them. They are too good for customer service.

I have purchased a Ryben Home UPS from M/s.Kongu Engineers during the year 2009. I have connected this UPS to Exide tubular battery. I am privileged to mention that till this the performance of the UPS is uncomprised. I wish Kongu Engineers and the entire team all the very best for all the future assignments.

Our total experience with Kongu Engineers has been excellent from the time we placed the order through to the after sales support. The team were not only very professional but took a hands-on personal approach to understand our business and to meet our specific requirements with the UPS. This has given us great piece of mind and security for our business and our customers.

My office is protected by a Ryben UPS. It has saved my equipment from surges, spikes and blackouts on numerous occasions. The best UPS to me is Ryben.

This is to certify that Ryben 1000VA Sinewave UPS working at our business place working satisfactorily for last 4 Years and services rendered by the company are appreciable

The UPS system has proven to be an excellent system and choice for Kalgan. We have experienced zero downtime or disruption to our business when the local power fails, which happens many times a day. We are very proud and happy with our solution and recommend Kongu Engineers for any companies.

We use Ryben inverter in our House and it powers all of our household items. Thanks Kongu Engineers.