Sold seperately From Wifi Hub - Add an Additional Probe to Your Hub. The TempSpike Pro WIFI Hub Meat Thermometer features two ultra-thin probes, each with 3 internal sensors and 1 ambient sensor for exceptional precision. Designed to grow with your needs, it supports up to 4 probes if you choose to purchase more add-on probes. With dual WiFi and Bluetooth 5.2, enjoy stable monitoring anywhere, indoors or out. Durable ceramic handles withstand 1050 deg. F, and IP67 waterproofing ensures dishwasher safety. The app offers real-time alerts, recipes, and USDA presets for effortless cooking. With a modular, rechargeable design (Booster - 20+ hours, probes - 36+ hours), it's perfect for beginners and pros tackling big cookouts.