Detects energy emission in the infrared spectrum and converts reading into a display of temperature. Features laser pointer, data-hold and auto-power-off. Temperature is displayed on a large 23mm LCD HD colour screen with back-lit display for use in low light areas. Temperature can be shown in either °C or °F. Temperature Range: -50°C to +400°C (-58°F to +752°F). Powered by 2 x AAA batteries (not included).