Only for the single bore doors and for standard prepared single bore doors, need to drill additional 4 holes for the fasteners.Not tall enough to cover the 2 bores on standard door, Don’t use this together with deadbolt, space is not enough
Does not lock automatically (this is a pro or a con depending on your needs) - NOT Deadbolt!
Size 7.67” x 2.44”, Maximum borehole diameter 2-1/8",Only for the right handed door(Suitable for wood or metal door thickness within 35-50mm/1.38-1.96inch))
100% Mechanical Stainless Steel 304, excellent hard material, The thief very difficultly pries open them,perfectly safe
Design for do it yourself (DIY), No Risk of "Low battery”.Combination can be 4-8 digits(no repeat) and you can enter these numbers in any order to unlock it.