Adventure Game Prop for Kids Party, Weight Scale Puzzle for Students Lab

Game Puzzle Workshop How to use this weight scale game prop-- Power up this live escapes device, the lock is tightly closed. When an object with correct weight is put on the sensor, the EM lock is triggered. This Handmade game prop includes:power adapter, controller and weight sensor. Notes for this amazing  adventure game-- There are two kinds of sensors: 0~5kg sensor and 0~40kg sensor, please choose the sensor according to your needs. EM Lock is not included in the package, please purchase it separately in our store if needed.           There are two kinds of locks :           60kg force for drawers and small doors           130kg force for big doors.