Mechanical Keyless Entry Door Lock for 304 Stainless Steel - No Low Power Risk

About this item

• 100% Mechanical (no risk of low battery), Stainless Steel deadbolt lock is extra hard (304), you can use passcode or key to lock it, or both, very difficult to pry open. Not satisfied? 100% Refund or Replacement
• Double Security: 100% Mechanical (no risk of low battery). Does not lock automatically. NOT Electronic Lock. Stainless Steel deadbolt lock is extra hard (304), you can use passcode or key to lock it, or both, very difficult to pry open.
• Design for DIY installation: Combination can be 4-8 digits (no repeats) with tumblers providing over 8,000 options. Please refer to the installation video. Please be noted that the combination code can be used in any order.
• Slight Adjustment to Door Knob : cutout may be needed to accommodate width of lock(Borehole can not less than 1-15/16"). For double bores standard door, this lock must install on the above bore. Size 5-1/2" x 3-1/4", Maximum borehole diameter 2-1/8"
• Widely Applicable：residential homes, apartment buildings, offices, schools, hospitals, and other applications where the need to restrict access to an area.