Redi-Fork Digital Probe Thermometer with Detachable Tines and Rapid Read Tip... Take the guesswork away! Instantly check readiness and doneness of food with the new Rapid Read Tip. Never overcook or undercook again; Auto-on operation display turns on automatically when the temperature of food reaches 113 degrees F; Just set temp & Redi-Fork beeps when food is ready; Helps avoid E. Coli by cooking to proper temperature; Timer included digital 24 hour/min./sec. count up & count down; Measures in both F & C; Two AAA batteries included.