Unlock the door with an access card for entry and exit. Supports EM or SM compatible cards with high-speed, long-distance reading and dual internal/external card reading. Integrates access control host and smart machine lock, compatible with all building intercom and access control systems. Features an anti-slam door alarm and automatic locking when the door is closed. Provides audible and visual signals for lock status, ensuring quiet and environmentally friendly operation. High anti-destructive integrated structure design with reasonable circuit and mechanical design for easy installation, operation, and durability. Suitable for homes, offices, schools, hotels, factories, warehouses, and more. Specifications: Condition: Brand New Color: Silver Material: Zinc Alloy Input Voltage: DC 12V Static Current: <38mA Operating Current: <350mA Operating Temperature: -40 ~ 70℃ Operating Humidity: <95% Unlock Methods: External metal key, external master card RF Card Unlock Reaction Time: <0.5s Card Reading Distance: <20mm/0.8in Package Size: Approx. 13 x 10.5 x 8 cm / 5.1 x 4.1 x 3.1 inches Package Weight: Approx. 1263g/44.6oz Package List: 1 x Lock Body, 1 x Lock Ear, 1 x Outdoor Sensor Cover, 1 x Mechanical Lock, 3 x Mechanical Keys, 1 x Management Card, 2 x ID Cards, 1 x Mounting Screw Package, 1 x User Manual. Note: ID card color is random.