Review on Xantrex 8080915 PROwatt Transfer Switch by Quartreal Eagleman

Solar Switch! works fine for me. So I have a couple of deep cycle RV batteries in a shed near my house that get charged by 100w and 50w panels. I ran 12 volt power through a vent in the foundation of the house under the floor and went upstairs to my entertainment center. I have security cameras that can be seen on the additional TV in this entertainment center. When it's sunny I use a 600w Samlex inverter (sine wave) to power the TV. Before I got the relay transfer switch I'm considering, I had to physically disconnect the TV from the inverter and plug it into the wall when we didn't have enough solar power to run the inverter and charge the batteries while the TV was running. Now if the voltage drops to about 11 volts and the inverter sounds an alarm - I just turn off the inverter - and this relay switch automatically switches to the outlet! That's great. Now if I just had a circuit breaker that turns the inverter off at 11 volts and turns it on at 13 volts, the whole system would be fully automated. NOTE: When I first plugged it in, according to the labels, the transfer relay will give priority to the AC input "shore power" / wall outlet. That way, when I turn on the inverter, the transfer won't happen. So I just swapped the plugs (AC inverter and wall AC), now the inverter has priority and it works great. Normally it would be the other way around in a van or boat.