I was wondering if I use two of the same brand and model of wireless thermometers, will they send and receive on different channels? I'm using two different types right now and prefer one brand over the other. I don't want to buy the same model if they use the same frequencies. Any info would be appreciated. I've been smoking for less then a year and so far I haven't had any failures, but monitoring temp is important to me especially on those lone 15 to 18 hour smokes. I'm using a 18.5 Webber SMC smoker. Thanks for any input.