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ADEL LA9-3 Heavy-Duty digital Fingerprint Lock   Features: Keyless electronic lock Heavy duty -- durable State-of-the art design Three ways of unlocking: Either fingerprint,key or code only ONE KEY WAKE UP--Press only one button "0" to wake-up the reader Single latch mortise, easy and simple installation and operation Fingerprint can be added or deleted with lock on the door Capacity: Maximum of 99 fingerprints Cast-Steel Integrative Structure Uses 4 AA alkline Batteries (Included) Stainless steel tubular deadlatch 4 digit keypad Adopts optical CMOS fingerprint sensor Includes2-3/8" and 2-3/4" latches, to fit either backset Satin Nickel Finish Will fit door thickness from 1-3/8" to 2" Will fit a standard 2-1/8" diameter hole, only one additional 3/8" dia. through hole will need to be drilled Very easy installation and operation One year battery life under normal use The lock can be set to a Passage Mode at any time Two high security override keys are provided for emergency entry Compact and attractive design Image capture time: 1 second Response time: 1 second External contacts for battery-power override Specifications Sensor Optical Users 99 Pin-codes 1 Wakeup Press One Button "0" Deletion Non-Individually Enrollment Controlled by Pin-Code Latch Tubular Latch 2-3/4" & 2-3/8" Deadbolt N/A Key Override Yes LCD Display No Weather Cover Optional Handing Right or Left handed Weatherproof No Passage Mode Yes Dimension 7.56" (H) X 2.83" (W) Audit Trail No Installation DIY Power Source 4 x AA Batteries (Included) Warranty 1 Year (Manufacturer)   Item Technical parameters Fingerprint sensor Optical sensor Sensor resolution 500 dpi Antistrike ability of sensor surface Remain good condition after being jabbed with a 4H pencil at a 20cm's distance. Authentication speed <1 second Authentication methods 1:N or 1:1 FAR ≤0.0001% FRR ≤1% Angle for putting finger ±45° Fingerprint scanning Once to get one fingerprint template Fingerprint template saved All enrolled fingerprint template will be saved while replacing the batteries User capacity 120max Light jam Sunlight resistable Sensor surface Optical glass with PVD coated Operating voltage 4 AA alkaline batteries, DC 4.5~6.0v Battery life Approx 12 months Temperature for storage -25°C-85°C Static consumption ≤8uA Dynamic consumption ≤120mA