Feature: 1. Compatible use with mechanical locks for intelligent control and manual opening mode. 2. Power off lock, power on and unlock, in case of emergency, it can be opened by mechanical lock to meet fire protection requirements. 3. With door, lock state NO (normally open), NC (normally closed) signal output. Double unlock mode, start up, shutdown / normally closed. 4. Made of high quality stainless steel with copper coils for high strength and hardness. 5. Embedded installation, exquisite appearance, wide locking mouth and wider application range. 6. The electromagnetic part is made of high-quality magnetic materials and special processes, and no magnets remain for a long time. 7. The lock time depends on the starting up time. Easy to install and use. 8. Small size, safe and stable, and it is not easy to be damaged. 9. Specially designed to easily adjust the distance of the tongue. 10. Suitable for office buildings, stainless steel doors, wooden doors, fire exit doors, the main entrances and exits of the community. 11. It is widely used in schools, mines, factories, banks, prisons, courts, hotels, farms, bathing centers, etc. Specification: Condition: 100% Brand New Item Type: NO/NC Cathode Lock Material: Stainless Steel Color: Silver Lock Tongue Structure: Zinc Alloy Die Casting Signal Function: with Door (Door Magnetic), Lock State No (Normally Open), NC (Normally Closed) Signal White Line: COM (Common) Orange Line: NC (Normally Closed) Blue Line: No (Normally Open) Working Principle: Power off Lock, Power on Unlock Opening Method: 90 Degrees Maintain Strength: 250kg/551.1lb Thrust Voltage: DC12V Current: 12V / 280mA Special Design: Adjustable Bolt Application: Wooden Doors, Metal Doors Surface Temperature: Below Room Temperature + 20 ° C Applicable Temperature: -10 ° C - 55 ° C (14-131F)Size: Shown as Picture. Package List: 1 x NO/NC Cathode Lock1 x User Manual1 x Set of Mounting Accessories