Features 2 LED light indicators, green to open, red for error or low battery One-touch reset button inside the safe to reset the code Simple to operate programmable digital keypad Supplied with 2 manual over-ride keys Steel construction pre-drilled holes with fixing bolts included Electronic lock with 100,000+ combinations, 3 to 8-digit code, user code can be numbers or letters Locking mechanism: Anti-bump solenoid and front locking bolts (16 mm) Low battery warning, red light will flash when entering the code Time Lock sets after 3 incorrect entries for 20 seconds and then 6 minutes after 6 consecutive times Protect documents, electronics, jewelry, keys etc. 4mm door thickness with pre-drilled holes with fixing bolts included 4 x AA batteries included and mechanical over-ride: radial-key Yale have protected homes and enabled peace of mind, evolved from a mechanical innovator to driving the evolution of connected, smart locks and homes. Yale stands on trust, knowledge and heritage; making durable, quality products.