I use a Nu Temp wireless which has a set up for 3 probes, and a base unit. I have had mine for 3 years now and am totally satisfied with it. I bought all 3 units and use 1 for my smoker temp and the other 2 for meat. Here is a web site for it.http://www.nu-temp.com/701.htm
No matter what type of thermometer you get DO NOT submerge the probe under water. That is leading cause of meat thermometers going bad.
The feature I like best about the Nu Temp is that I can set 1 alarm for temp on the high side or low side. With the base unit I can sit in my lounge chair and check my temps without having to get up.