Product Specifications: Probe Charging time: 20 minutes，Probe Working time: 36 hours Booster Charging time :2 hours，Booster Working time : 3 months Bluetooth Version: Bluetooth 5.2 Waterproof of the probe: IP68, Dishwasher safe Food temperature range: -20℃ ~ 100℃ Environment temp range: 32F ~ 572F (0℃ ~ 300℃) Distance of the bluetooth:Up tp 100 meters(330ft) The 330FT remote range is the result of testing at an ambient temperature of 25°C without obstacles. in practical applications, it may be affected by obstacles or other factors, and Remote distance will less than 330FT. Product Features: Smart Charging ——No need to worry about the probe running out of power before each use, the probe will automatically turn on charging when placed in the charging case and the indicator light will show green when fully charged. (Ensures that the booster is charged). 100% wireless and compatible with the latest Bluetooth 5.2 ——perfect for outdoor and indoor cooking. Especially for hotels, restaurants, parties, BBQ. Estimated completion time display ——It shows the meat temp and an estimated cooking time, no more guessing game, no more overcook. Support for custom menus and temperatures ——Suitable for Cooking Beginners and BBQ Lovers, Guiding You to be a Chef, Cooking the Delicious Food for Families. Preset 9 food types and 5 maturity options——Help you cooking different meals,guided you through every cooking process to perfect and consistent 3 Steps Connect the Probe: Search the keyword in APP Store or Google Play for "Aicooking" to download the app and also scan the QR code on the box to downloadTurn on the Bluetooth of your mobile phone(IOS system), Android have to turn on the Bluetooth and GPS at the same time.Take out of the probe, turn on the booster ,click the APP, and the probe will connect automatically. Note: The app will not ask for your email account password, permission to snoop in your contacts and permission to view and change your photos. Warm Tips: 1. If the food is wrapped in tinfoil or your oven has the anti-radiation function, the Bluetooth signal may be blocked. Closing the grill lid may interfere with the Bluetooth signal.If the probe is disturbed and disconnected, keep it close enough. 2. Do not use this probe in a microwave oven because the microwave may damage internal components! 3. If the probe has been connected to a phone, it cannot be connected to another phone. 4. It can be fully charged in 20-25 minutes even if the indicator light does not turn green. 5. Please do not use this probe touch the flame directly. 6. While the probe is charging, Bluetooth cannot be connected.