Make sure you have entered the # sign after you have entered your security code. Once the correct code is entered, you have 5 seconds to open the safe. If the door is not open within the 5 second period it will re-lock and you will need to enter your security code again. Make sure to turn the handle clockwise to open the safe. If the red light comes on, check the battery and replace it as necessary. If the green light on the lock turns on for a moment, followed by the red light, you have a weak battery and will need to replace it. If you receive beeps 3 times, it means you have entered the wrong code.