Mortise thickness 18mm,strike thickness 22mm. No electronic inside mortise. Original Copper Color with PVD Coating, moisture proof, fire retardant. Satin Chrome, coating lasting 10 years. European Standard mortise 72mm/85mm hole distance. Mortise thickness 18mm, strike thickness 22mm. No electronic inside mortise. SLE4442 IC card, 100,000 times life. High security, compatible with Energy Saver. Override Computer Key for Emergency use, individual/master cylinder. Step by step installation software, easy operation. OEM locking system available. Classified Access Authorization for safety management. General master card, building master card, floor master card, guest card. All cards with validity, guest card expires automatically at default check out. Lost guest card suspension simply by issuing a new guest card or Cancel card. Multiple operators with different card issuing authorization. Lock operation record printable. 240 pcs or more. Receptionist card issuing records printable. Power:3 pcs #7 Alkaline batteries, 18 months?duration. Low Battery Voltage warning. (Lower than 5.5 V.). Self Error detecting by LED and beep? Improper lock warning. Passage function available. Can be integrated with Lift/Parking/Swimming/Sauna Room/Gym accessetc. One card system. Interface with most of the PMS system. Personalized Locking System and cylinder cover. CE & FCC certified