SOUNDTECH UPS BREAKS WI-FI ROUTERS

I bought 2 UPS for my Wi-Fi from SOUNDTECH in Montague Gardens and when I plugged it in, it got extremely hot and "popped". Also blow my Wi-Fi router which costs R4000 to replace. Going to the small claims court to recover my replacement cost of my router. Would recommend that you stay away from Soundtech's products as they don't seem to be quality products.