Gianni Industries Door DG-100: With the DG-100 you have purchased a state-of-the-art digital keypad entry system with split design for high security. The keypad and controller board can be installed separately with a distance of up to 50 meters. The DG-100 has the capacity to store up to 99 individual user PINs with either 5 or 4 digits. The Non-Volatile Memory ensures your codes are stored even after a power outage. For maximum security, an invalid PIN will lock out the system for 60 seconds after 30 incorrect attempts. The random user codes feature provides anti-peeping protection.