This is a money safe with alarm kit. With this kit you will learn how to connect an electrical circuit to a rotary lock. When you have built the safe you can hide important things like money in it. The box contains all the parts needed to build the safe. You only need an AA battery and a Phillips screwdriver. The kit is designed to stimulate the technical skills of children. In addition, they learn to think independently. The kit is suitable for children aged 8 and up.