It is a truly wire-free meat thermometer with Bluetooth function that to help us obtain accurate food temperatures and monitor from a smartphone, perfect for use in grills, smokers, ovens, etc. Bluetooth version:5.2. APP Name:ALBBQ Internal temperature:-20-100℃/4-212℉; Ambient temperature:0-275℃/32-527℉ Wireless Distance:500 feet max. Probe charging time:30 minutes. Probe standby time:24 hours Host/repeater charging time:2-3 hours Host/repeater standby time:120 hours Waterproof rating:IP66(probe) Operation precautions: 1. Please charge the host for 1-2 hours to that the probe is located in the charging compartment of the host before using 2. Please charge the probe for 30 minutes before each use to that it can stand by for 24 hours 3. When the probe is not turned on or cannot be connected to the APP, please put the probe back to the probe card slot for charging, and observe the power. If the probe is fully , please disconnect and reconnect it on the APP 4. When the probe is in the oven , the APP prompts that the probe has been disconnected , please put the host close to the probe(oven). Walls and metal doors act as barriers to distance , please keep the effective distance between the host and the phone for use. 5. For better communication with mobile phones and longer wireless transmission distance, please keep the host within 5 feet of the cookware. Due to the high temperature of the cooking equipment, please do not place the main unit directly on the of the cooking equipment or in a high-temperature environment. The safe operating temperature range for the host is -20℃ to+60℃. 6. During use, please take protective measures to avoid high temperature . Colour:As Shown Material:Plastic+Stainless Steel Package Contents: 1 * Thermometer 1 * USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.