The EPS function switches a bit slow on the invertor I have (30ms) which sometimes makes my TV or PC monitor restart (High power electronics). A bigger issue is the fact that my invertor even in passthru mode has it fans whirring away with anything higher than 120w. Using this ATS has gottern rid of both these issues for me. Its quiet and switches like an UPS (so no flicker in my lights or, TVs and monitors restarting). And it extends the life of my invertor as it is not working all the time. A def must buy!

Using it on my Ecoflow River Pro on my computer and it works flawlessly. The switchover rate is much faster than with the Ecoflow, but still not 0ms like a UPS. Very happy with my purchase.

Works like a bom. Switch over in less then a split second. You dont even notice the electricity went off. If you want to invest in something. That does work and not wast your money. This is the product you looking for. Look no further. Even your wife will be proud of you.

I have been sold on this product. It does what it says it does. It has saved me a lot of time switching and charging with these loadsheddings. The smart switch works like a charm (seemless). I am considering more

Although it's not cheap, I am very happy with this purchase and have ordered another one. I use my inverter to power two desktop computer and this ATS can switch between grid and inverter fast enough that there isn't a flicker.   This is well engineered (thick cables etc) -- my one small grumble is that it isn't aesthetic at all but being designed for a 3kW loads I can understand why and that really is something I am happy to live with. The main reason I haven't given 5 stars is that I do think it is expensive but you need to think about your application. 

Product worked great until yesterday not switching from grid to inverter anymore. Contact supplier waiting on response. Supplier made contact in a positive matter towards solving the matter. They will send me a new product and i will send the faulty product back for fault finding . Received new product today works great. Supplier refund shipping costs . Flawless transaction. Great service from supplier.

Works seamlessly with my Ecoflow Delta and I use it to switch between battery backup and DC for lighting, TV and Audio. It has an audible click when switching supply but otherwise no noticeable buzzing. Great product, saving you from having to unplug and plug everything every time during load shedding.

I was looking for a reliable transition from my grid power to my Ecoflow unit and this does the trick. It means that I don't have power running through my inverter constantly, and this gives the fan time to cool and the inverter time to charge when I have power available. The switch-over is instant and devices like my TV, lights and sound system continue to function without any dip or cut-off at all. Great product!

Bought 2 of these for my Ecoflows (River and Delta). The switchover is extremely seamless. The River has my WiFi setup connected to it, and usually has my laptop and screen connected. The Delta has my TV (42 inch 4K), soundbar with sub, PS 5 (usually on standby closer to loadshedding), plus a couple of chargers. Can’t recall even seeing a flicker when the changeover happens. Will be getting more for my parents for their power stations  

It works well and does what it says without issues, the labels on the plugs are handy. I just find the box to be a bit bulky and the cables are at an awkward length (makes it hard to tidy and organize cables). But overall I would recommend.