Product Name: Smart Lock Electric Rim Lock for Video Door Phone (TL1073-SL-YL-L) Model NO.: TL1073-SL-YL-L Type: Electronic Function: Fail-Secure Working Principle: Electronically Controlled Lock Application: Public Passage, Enterprise, Supermarket, Campus, Hospital, Warehouse, Hotel, Company, Garage, Community Certification: RoHS, FCC, CE Customized: Customized Material: Iron Surface Finishing: Yellow Powder Coating Cylinder: Solid Brass Separated Cylinders Latch: Brass Roller Latch Voltage: DC12V+-10% Working Current: 1.5-3A Operating Temperature: (-10)~+55