- Keep your valuables secure with this Yale safe - just set a 3 to 8 digit PIN and you're good to go- Forgot your PIN? It comes with two backup keys so you won't get locked out- It has user-friendly indicators - green means open and red means error or low battery- The 16 mm locking bolts are rock solid to keep any potential trouble-makers out- The keypad locks down for 20 seconds if you enter the PIN incorrectly three times- It comes with anchor bolts so you can fix it to a wall or floor for added security