R-SNC Electric Strike Door Lock for Access Control System Fail Safe Access Control Kits R-SNC/R-SNO is designed for wooden door, metal door, PVC door and so on. The products of our company are various and full-equipped.The operating principle of electric strike is that the electric power turns into magnetic force. Note:The Default mode is NC(Fail Safe),if you need NO mode,please Click Here What is NC and NO mode? NC:When Power On,the lock will be locked NO:When Power On,the lock open. Features: Material: Stainless Steel Testing to 1000000 cycles NC Mode - (When Power Is Turned On Door Is Locked) Fail Safe Mode High-Temperature Painted, Durable and Beatify Article Suitable For: Wooden Door, Metal Door, Fireproof Door. Specification: Voltage: 12VDC Current: 200mA - 450mA Safety function: Built-out voltage spike suppressor Opening Mode: 90 degree swinging door Dimension (Face Plate): 150 (L) x 38.5 (W) x 34 (H) mm Weight: 320g