Digital thermometer/hygrometer combination unit. Temperature range -58 to 158 degree F in 0.1 degree F increments. Humidity range 20 to 95 percent in 1 percent increments in the 30-83 percent range (3 percent increments for the remainder of range). Display with built in tabletop stand or hang using screw holes (screws not included). Operates on 2 AAA batteries (included).