Sorry i'm adding this so after the fact, but I just wanted to share my frustration.
My Et-732 worked 'ok' out of the box, in that it seemed to only lose signal every hour or so. But the front face trim on the receiver did fall off after the very first cook. I should have taken that as a bad sign.
Anyways, in the last year or so my unit loses signal every 5 minutes if it has to transmit through any sort of wall. I tested it out even inside the house. If I keep it in the same room it has no problems keeping signal, but the moment i move one of the units to a different room, it loses signal. Its incredibly frustrating. When I cook the smoker is quite literally about 15-20 feet away from my couch (but outside obviously) and it'll lose signal within 5 minutes every time.
I called up maverick to try and trouble shoot it, and they told me to replace the batteries, which i had already. So after that they check on my warranty (it was over by a probably 6 months or so). After that the customer service rep's exact quote to me was "Buy a new one". I was so put off by this. I wasn't expecting them to replace the unit for free, but I did expect them to try and help me trouble shoot this a bit. Instead i get "replace the batteries" and "Buy a new one"....and then she abruptly said "Is there anything else I can do for you?", in shock i said no, and she hung up.
I've considered buying a whole new et732 when I've seen them go on sale. But just the sheer dismissiveness they treated me with on the phone really put me off and I just can't bring myself to buy another one. The day after dealing with their customer service, I was so ticked off that I wrote a very polite but serious email to the president of Maverick explaining how disappointed I was in their customer service and how I had been treated. I never heard a single peep back from him or anyone else.
Overall, quite the disappointment. The part I find most frustrating is, there really isn't any product other then the igrill to even compete with it. So i'm stuck either buying another one and hoping it works, or not using one at all.