2500 EUR
When activated, the monkeys' eyes will be illuminated with red diodes. You need to throw balls at monkeys, namely at tongues, so that the ball bounces and then the red diode will change to green. When all the monkeys' eyes are green, the cache will open or the next puzzle will be activated.
This puzzle can be changed and reprogrammed based on your task. Possible to open magnetic locks, activate another puzzle, play music, turn the light on/off. Just let us know about it to calculate additional functions.