Ultra-Thin Probe & Long Battery Life: 0.17-inch (4.55 mm) ultra-slim needle leaves almost no mark on your food. Built-in battery lasts up to 40 hours on a single charge. Premium 316 stainless steel: Delivers superior corrosion resistance against acids, humidity and fats—far better than 304—while NSF/ANSI food-grade certified to prevent metal leaching, ensuring safe, hygienic, long-lasting performance. High-Temperature Durability: Withstands ambient heat up to 1000°F (530°C) and internal food temps up to 221°F (105°C). Ideal for grilling, deep-frying, smoking, and more. Important: This product is an accessory, Can be connected to ProTemp S1 and ProTemp 2 Plus. Please confirm that you already own a [ProTemp S1+ ChefsTemp 4-in-1 Charger] or [ProTemp 2 Plus] before purchasing. It is not recommended to use it for Original ProTemp Plus, as it may not be compatible. Multi-Sensor Precision: 5 sensors at the tip measure internal food temperature with pinpoint accuracy. 1 sensor on the handle tracks ambient (grill/oven) temperature in real time. Probe Size: 4.92×1.10×0.17 inch (125×28×4.55 mm) Accuracy: ±0.9°F (±0.5°C) Probe Waterproof Level: IP68 Package Includes: 1*probe ProTemp 2 Plus Upgrade Needle Probe Wireless Meat Thermometer Unlimited Range Bluetooth & WiFi ,Compatible with ProTemp S1 & ProTemp 2 Plus (One Probe). Please confirm that you already own a ProTemp S1(the charging case is required as a separate purchase) or ProTemp 2 Plus before purchasing. It is not recommended to use it for Original ProTemp Plus, as it may not be compatible.