8 years & up. Young architects and engineers will be able to design the house of their dreams! The ArchiTech Electronic Smart House features 75 building concepts and 15 circuits to construct modular structures and power them up with lights, sounds, sensors, and motorized parts. As kids design and build their unique home, they can wire up elevators, alarms, trapdoors, and more! Promotes STEAM concepts. Requires two 1.5V AAA LR03 batteries (not included). Included: 20 Posts, 2 Yellow LEDs, Flickering LED, Red LED, Battery Post, 8 Wires, Motor, Light Sensor, Switch, Push Button, Double Push Button, Stairs, 2 Spindles, Buzzer, 8 Sheets of Panel Cards, and an Illustrated Activity Book.