Upgrade your analog 20 or 30 lb. smoker to digital control. Simply plug the power cord from your analog smoker into the outlet of this replacement control box and mount it on the side of your smoker. Plug the control box into a 110V wall outlet and you're ready to enjoy the convenience of digital accuracy and display. Unit comes with 2 temperature probes, one for inside air temperature to regulate the temperature, and one meat probe to go directly into your meat.