coin operated system is characterized by its low power consumption, electronic intelligence and long service life. The coin chute of the system can be customized to detect and accept different coins and the shutter cannot be released if an unacceptable coin is dropped into the chute. The unacceptable coin will then be ejected automatically. The circuit of the system will automatically go into hibernation when it is idle for some time and the patron needs to drop a first coin (which will be ejected) to awaken the circuit when a beep sound will be heard. Then the shutter system can be operated again by depositing coin(s) and shutter duration will be accumulated in accordance with the number of accepted coins.