Bought a GM Hummer Ultrasonic Mosquito repeller costing Rs 120/-, today tested it but to my disappointment this product does not have any effect in repelling mosquito’s. In short I can say that I am quite disappointed with this product as I see plenty of mosquitoes flying in my room. All-out liquid mosquito repellent is far more effective than this crap product.
GM modular is a good company making quality products how ever this product was a total useless you can check out the product on this site https://gmmodular.com/nightlamps_04.html
Please don’t waste your money on such crap.