Is Smart Thermometer microwave, pressure cooker, steam oven, slow cooker, or Instant Pot safe? April 24, 2020 18:48 Updated No. Never submerge or expose the thermometer to excessive liquid, humidity, pressure, or use in the microwave. Related articles What are the temperature limits? Can I deep fry? Can I use it for anything other than meat? Requirements for using Smart Thermometer Can I use the Smart Thermometer on my BBQ grill?