Key cabinet with electronic locking device adds higher security to protect important keys. 30-key capacity cabinet is made of welded heavy-gauge steel with full piano hinges. Interior holds numbered, writable white key tags with chrome-plated steel hooks. Use the included key control chart to record lock and/or key location for better organization. A supply of yellow key loaned tags is included to identify your current users of secured keys. The door handle features an easy-open lock. Electronic locks provide up to eight number keypad codes for enhanced security. Three wrong entries result in an alarm and automatic lockout. The key cabinet offers two manual override keys for emergency opening. Handsome two-tone design also features a low-battery indicator and rich scratch-resistant, Silver Vein powder-coat enamel. Electronic key cabinet includes four AA batteries for operation.