Solution: Please fully insert the probes in the unit, no gaps! Then problems solved. Please do not put the unit in high temperature places. The temperature of the plastic unit can bear should not over 80°C/176F Description:The Inkbird Digital Wireless Thermometer IBT-4XS with timer and alarm, which is built in 1000mAh Li-Battery, magnetic and rotation reading screen function. - It includes the stainless steel probes will help you monitor the meat and the oven/smoker temperature at the same time. The over temperature alarm, range and time count down alarm will make grilling easy even for beginners. - With a range of up to 150 feet/50M, this grill thermometer can allow you to monitor your meat and smoker temperature from anywhere in your home. - And you can entertain friends, prepared other food or have a nap. - Inkbird IBT-4XS digital wireless instant read thermometer can not only help you cooking tasty, but also comfortable and save your time. - And it is the best choice for festival gift as well. Features:-- High temperature accuracy: ±2°F/±1°C- -Easy to use. - -Up to 150 feet/50M signal outdoor.- -Alarm when temperature reaches, power off or lose link and so on.-- Presetting values are saved when power off.- -Shows Centigrade or Fahrenheit. - Specifications: Usage: This wireless digital cooking thermometer widely used for cooking, grilling, Roasting, BBQ, oven, meat, boiling, beer brewing and ect. - Temperature Range: 32° F ~ 572 ° F; (Short-time measurement); 32° F~ 482 ° F (continuous monitoring)Remote Range: Up to 150 feet/50M Temperature Accuracy:±2°F/±1°CProbe Length:about 4.9ft/150cm - Certification: FCC/CE/ROHSPackage Included:1 x Large LED digital kitchen thermometer3 meat probes+1 oven probe1 x USB Charging Cable1 x Probe clip1x - English Manual Product Features Notes for This 4 probes Bluetooth Grill Thermometer - Please make sure the Bluetooth meat thermometer probes are firmly inserted into the Wireless BBQ thermometer ports. You may hear a click sound. Otherwise will get inaccurate temperature. For example, the thermometer meat temperature may display 572F or other inaccurate readings if the probes didnt insert well. Temperature range: 32 F ~ 572 F; (Short-time measurement); 32 F~ 482 F (continuous monitoring) Let You Free When Grilling This Inkbird 4 probes grill thermometer can pair with Android or i - Phone (Please make sure the GPS location is open). This bbq thermometer read your cooking temperature by your phone anywhere (Connecting distance range up to 150ft/50M). High temperature accuracy could let you be rest for your cooking. No need worry about your meal overdone with this Wireless Grill Thermometer. Please note: Tearing off the plastic protect film on the screen before using. Magnetic Design and Large LED Screen The digital thermometer magnetic design on the back of the Inkbird IBT-4XS could be adsorbed on the smoker or oven ect. strongly. Another amazing design is that LED reading could be rotated by double touching the power key. You can read temperature value any side. The digital tube of the Bluetooth smoker meat thermometer LED is 2.2 x 1 Rechargeable battery and Temperature Graph in App The grill meat thermometer battery can last for about 40 hours once fully recharged. Bluetooth remote range is 150 feet in outside places. The thermometer app is with the graph function. Could view the temperature change through the graph. What You Get for This Bluetooth Thermometer 1 x Smart Meat Thermometer, 3 meat Probes and 1 ambient probe, 1x USB charging cable, 1 x manual,2x probe clips. Get yours today, skyrocket your grilling performances and make everyone wonder!