I'm updating my review to focus on the product itself after using it on a couple of trips. For the price it would be really hard to beat this unit. I have it fully hooked up in that I'm using the automatic transfer switch to power all of the outlets in my camper - I tapped into the circuit from the opposite end, moved the GFCI to that end and disconnected from the load center. I occasionally get a ground fault error when switching from Shore to Battery by just cutting the power but it works on both and I'm learning the grounding something on wheels can be a challenge. All this does it give a warning and you restart the unit and it works. The wiring instructions were clear including fuse size requirements. Bluetooth connected immediately. The remote on / off switch is convenient - I created a "box" in my storage area for my equipment that I ventilated with fans etc so nice not to have to open that to turn on and off. The real time monitoring is great and for me a great way to learn about how much power everything takes. I can watch how much it draws for each device on the app. I also have the Renogy shunt and Renogy solar controller so it's nice to understand how the whole ecosystem works together. Finally, I also did get someone who called and apologized for the fiasco described below. It will be a while to get the bad taste out of my mouth for the customer service but overall the products outweigh the pain of getting it all in and working. My Original Review: I originally purchase this exact unit directly from Renogy but it fried on the initial startup. It's just 2 wires (3 if you count the extra ground which I used) and I have 2 other inverters so it was installed properly. I tested it prior to any load so the picture is of the working one. Doubters feel free to apply for a job at Renogy, you will fit right in. It took 34, yes Thirty Four... messages and 26 days to ONLY get a refund from Renogy. I contacted them the day after I received it to let them know I had a trip coming up and needed a replacement ASAP. Rather than have a good story about getting a customer on the road they chose to string me along requesting pictures & video - they had me hook it back up and fry it AGAIN! They even suggested that if I needed it quickly to buy another from tugapower.net - seriously? The unit I purchased on tugapower.net - same unit, installed using same wires - worked on first try and got me on my trip - still working fine under load and as a pass through when on shore power. I want to also point out that they are zero for two on direct purchases. The first was a solar kit that they sent me a previous generation controller with and took so long to replace that I didn't get to use it on my trip last fall - their excuse? We have too many NEW orders to focus on. So beware. You might be able to stick the landing and get the Renogy system you always dreamed of but you better be checking that they are actually sending what you asked for, that it works and be ready for some of the worst customer service you can imagine if you have to replace something.