Is the Smart Thermometer microwave, pressure cooker, steam oven, slow cooker, or Instant Pot safe? October 23, 2020 03:14 Updated No. Never submerge or expose the thermometer to excessive liquid, humidity, pressure, or use in the microwave. Related articles Can I use the Smart Thermometer on my BBQ grill? My turkey has pink juices. Is it safe to eat? What are the temperature limits? Can I use it for anything other than meat? Can I deep fry?