The ZKTeco AL-133NC is a concealed electric strike lock designed for secure access control on metal doors. Operating in Fail Safe (NC) mode, the lock remains secured while power is supplied and automatically unlocks when power is disconnected, making it suitable for emergency exit applications. With a 250 kg holding force, durable metal construction, and compact recessed design, the AL-133NC provides reliable performance for offices, commercial buildings, and access-controlled facilities.

Key Features

• Concealed electric strike lock for clean and secure installation
• Fail Safe (NC) operation – unlocks when power is disconnected
• 250 kg holding force for reliable door security
• 12V DC operating voltage
• Low power consumption (120–240 mA, depending on configuration)
• Durable metal construction for long-lasting performance
• Designed for metal doors
• Compact lock body for recessed installation
• Suitable for access control systems, offices, commercial buildings, and industrial facilities
• Easy integration with access controllers, exit buttons, and UPS systems
• Reliable performance with minimal residual magnetism after prolonged use