Provides instant temperature readings without worry of physical contact or cross contamination. Measuring distance of 1.2"–2". Temperature displays within 1 second. Audible alarm if temperature is more than 100.4°F (38°C). Automatic power-off in 30 seconds. Gives up to 100,000 readings on 2 AA batteries before battery needs a replacement. Batteries included. 1-year device warranty.