Works as advertised. I've enjoyed using if for several BBQ's so far. I was a little frustrated the first day of operation or non-operation. All of the instructions say to start the pellet stove in the smoke setting. I had to waste a day troubleshooting to figure out the "Er2" error code. All along, all I needed to do was start it in Shut down setting. Very frustrating that it's not changed in the web site to indicate this. Also, It would be nice if ZGRILLS had a cover for the 550B Grill.