The electric door lock is made of durable and strong aluminum alloy and stainless steel,ensures a long service life. And it' suitable for wooden door, glass door, metal door, fire-proof door, etc. Great choice for your home and doors that needs an electric mortise lock! Features: Electric Mortise Lock - Specially designed to control door locks. Equipped with brushed aluminum panel, makes the lock more stylish. Magnetic signal feedback on the bolt, greatly ensures safety. Made of high-quality aluminum alloy and stainless steel, which is strong and durable. Intelligent electric board with stable circuit, no external interference, makes it more stable and safer. Suitable for wooden door, glass door, metal door, fire-proof door, etc. Specification: Type: Electric Mortise Lock Model number: 218B / 218C Material: Aluminum Alloy + Stainless Steel Working voltage: DC10V -18V Instantaneous current: 850mA Working current: 85mA Delay time: 0 / 3 / 6seconds ( Adjustable ) Four lines: Positive, Negative, NO, COM Five lines: Positive, Negative, NO, NC, COM Magnetic signal: NO, COM Applicable door type: Wooden Door, Glass Door, Metal Door, Fire-proof Door Weight: 670g / 23.7oz Size: Approx. 200 * 34 * 40mm / 7.9 * 1.3 * 1.6in Package List: 1 * Electric Lock Kit 1 * User ManualNote: Please allow slight error due to manual measurement. Thanks for your kind understanding.