4M - Motorised Barrier Gate

Build this motorised robotic barrier gate to stop intruders (and pesky silbings) from entering your room. It's a cool mechanical science gadget. Includes a smart key for opening the gate. Nobody can open the gate without it, so take it with you when you go out!

Barrier gate extends to 64cm and folds up neatly to allow people to enter the room.

Ages: 8+