What a shame !
After my son excitedly put this together in his room, he found it did not work.
I checked the connections, my dad checked the connections and then we discovered the "spring" that connects to set off the alarm, when you remove the plastic circuit breaker, is too flinsy and unable to reconnect.
A simple item that had the potential to provide much hilarity for my son and his friends, but failed to deliver due to its poor quality.
Dinorobot, also with circuit issues, failed to work and was cheap and flimsy.
Needless to say, I am in the process of returning all these Science Museum flops back from whence they came.
If you want to try something that works, go for the
Science Museum Strength Ball .