Measures with water resistant outdoor probe. Monitors outdoor temperature from -58 to 158 F. Monitors indoor temperature from 32 to 122 F. Large jumbo LCD display. Recall of max/min. 12 foot cable with probe. Wall mount or stand for desktop display. 12/24 hour clock. Temperature range: -58 to 158 F (-50 to 70 C). Unit size: 4 x .75 x 4.5. Uses 1 AAA battery included, with mounting accessories.