Oregon Scientifics THT312 Digital Clock with Thermometer conveniently displays the time, indoor temperature and outdoor temperature via an easy-to-read LCD display. This unit features a 10 foot weather resistant probe which monitors outdoor temperature for display to the main unit. A convenient LED backlight provides easy viewing in all conditions. This compact unit can be wall mounted or displayed on a desk top or shelf. Features: Waterproof outdoor probe LED backlight LCD displays time, indoor & outdoor temperature simultaneously Monitors indoor temperature from 23° to 122° F 10-foot cable with probe Wall mount or desk top display option Batteries: 2-AAA (Not Included) Dimensions: 2.5L x .7D x 4.1H (in.)