The Lockey Digital 2000 series offers a range of different functions based on the original Lockey Digital door lock design.The Lockey 2435 Digital Lock is a mechanical digital door lock with reversible handing and a holdback feature. When used with the relevant intumescent pack, it is rated as suitable for use on fire doors to BS EN 1634.This digital door lock is ideal for high-traffic areas that are in constant use with its easy-to-operate hold-back knob. The reversible knob allows for functional use on either left or right-hand hung doors.With 8,191 possible PIN combinations of 4 to 7 digits and a 60mm backset, it is also weather resistant and suitable for external applications.Standard keypad with 14 press buttons (C button to clear)NonhandedSuitable for internal and external useOver 7,000 code groups (when made up from 3 to 7 digits)Easy code change, designed to eliminate unnecessary code change errorsTeflon coated parts to enhance operation and delay natural wear and tearKnobs and handles have slipping clutch to prevent damage when forcedComplete kit supplied (no additional parts needed)Latch bolt with anti thrust pinHoldback featureReliable, quick, and easy to useAdjustable backset 60/70mm (12mm throw)Weather-resistantSuitable for internal or external applicationsInternal lever handleSatin Chrome finishNo batteries are required for use142mm (H) x 40mm (W) x 85mm (D)Door Thickness 35mm to 55mmReversible HandingAbout the Holdback: The holdback facility works by width drawing the latch bolt (to open) and pushing the snib on the inside to hold it there. This allows free entry (without pressing the code) if required. The hold-back facility can be disconnected if not required.