[Upgrade Version] AMOCAM Electric Electronic Door Lock Stainless Steel 6pcs Computer Key DC 12V E-lock Support Wooden Glass Metal Fireproof Door for Video Door Phone Doorbell Intercom Access Control Upgrade 6pcs Computer Key, Lock material iron Upgrade to stainless steel wire drawing processing, lock body surface anti-corrosion, durable and beautiful.100% brand new and high quality. Adopting the most advanced mechanical design. Can suit both Left and Right hand door (by rotating the lock 180degree), Can be opened from inside and outside (with keys) even if no power. Fits for electrical control, key or hand operation, connect via 2-wire to our video intercom system and open door, No need extra DC 12V power supply. Static electricity power consumption, long service life, strong practicability, strong security. Suitable for wooden door,glass door,metal door,fireproof door. Suitable for home,offices,schools,hotels,factories,warehouses,etc.