Construction – Safety Bar


Build the mechanical security bar to prevent intruders from entering your room. Build a smart science engineering gadget!

In stock

SKU: 4M0582 Categories: , ,



  • The motor has a worm screw that rotates a shaft to raise or lower arms A and B. The metal on the card completes the circuit that allows the motor to operate when the top button is pressed. The linkage mechanism raises the outer end of the bar, while the inner end lowers. Accordingly, the outer end of the bar is lowered while the inner end is raised.
General Characteristics
Weight  0,393 kg
Assembly  Yes
Batteries 2 – type: AAA
Package Dimensions (L x W x H) 24 x 22 x 6 cm.
Age 5+
Number of players 1+


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