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is there a simple way of making a digital door lock?

is there a really simple way of making a digital door lock like this one: http://www.gpc-kwt.com/images/pr-locks-door-and-window-locks-era-digital-door-lock-e291.jpg

Definitely not. I took a Simplex one apart and they are amazingly complicated. There are plenty for sale on eBay for about £20.

How to pick a door lock

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New Master Lock 265DCCSEN Dual-Function Door and Patio Door Security Bar


New Master Lock 265DCCSEN Dual-Function Door and Patio Door Security Bar


$24.89


2 In-door Dead Locker Desk Cupboard Furniture Cabinet Drawer Security Lock £0.01


2 In-door Dead Locker Desk Cupboard Furniture Cabinet Drawer Security Lock £0.01


$0.02


NEW WHITCO DEADLATCH TWIN PACK - DOOR LOCK BRASS DEADLOCK


NEW WHITCO DEADLATCH TWIN PACK – DOOR LOCK BRASS DEADLOCK


$84.13


2 In-door Dead Locker Desk Cupboard Furniture Cabinet Drawer Security Lock + Key


2 In-door Dead Locker Desk Cupboard Furniture Cabinet Drawer Security Lock + Key


$0.02


2 In-door Dead Locker Desk Cupboard Furniture Cabinet Drawer Security Lock + Key


2 In-door Dead Locker Desk Cupboard Furniture Cabinet Drawer Security Lock + Key


$0.02


2 Security UPVC Window Door Lock Sash Jammer + Fittings Kit


2 Security UPVC Window Door Lock Sash Jammer + Fittings Kit


$1.00


Security UPVC Window Door Lock Sash Jammer + Screws Caps


Security UPVC Window Door Lock Sash Jammer + Screws Caps


$1.00


KWIKSET SMART CODE TOUCHPAD ELECTRONIC LEVER DOOR LOCK WIRELESS


KWIKSET SMART CODE TOUCHPAD ELECTRONIC LEVER DOOR LOCK WIRELESS


$165.00


New Password Door Deadbolt Lock For Home/ Office Security Not Need Battery


New Password Door Deadbolt Lock For Home/ Office Security Not Need Battery


$76.79


SLIDING DOOR SECURITY BAR Master Lock 265DCCSEN Dual-Function Bar EX CONDITION


SLIDING DOOR SECURITY BAR Master Lock 265DCCSEN Dual-Function Bar EX CONDITION


$14.99


2 Security UPVC Window Door Lock Sash Jammer + Fittings Kit


2 Security UPVC Window Door Lock Sash Jammer + Fittings Kit


$1.00


New Password Door Deadbolt Lock For Home/ Office Security Not Need Battery


New Password Door Deadbolt Lock For Home/ Office Security Not Need Battery


$75.19


Master Lock Door Jam Dual-Function Security Bar DEVICE WORK SECURE BLOCKADE NEW+


Master Lock Door Jam Dual-Function Security Bar DEVICE WORK SECURE BLOCKADE NEW+


$25.75


Audio Door Entry Intercom Access Control Kit + Lock Rel


Audio Door Entry Intercom Access Control Kit + Lock Rel


$78.97


TOP SECURITY DOOR LOCK PADLOCK HEAVY DUTY 40MM 4 KEYS


TOP SECURITY DOOR LOCK PADLOCK HEAVY DUTY 40MM 4 KEYS


$13.86


Swivel Latch Home Security Lock - Fits on Door Jam - Strongest!


Swivel Latch Home Security Lock – Fits on Door Jam – Strongest!


$10.00


Swivel Latch Home Security Lock - Fits on Door Jam - Strongest!


Swivel Latch Home Security Lock – Fits on Door Jam – Strongest!


$10.00


Swivel Latch Home Security Lock - Fits on Door Jam - Strongest!


Swivel Latch Home Security Lock – Fits on Door Jam – Strongest!


$10.00


Swivel Latch Home Security Lock - Fits on Door Jam - Strongest!


Swivel Latch Home Security Lock – Fits on Door Jam – Strongest!


$10.00


Accessory Emergency Lock Box for Spare Door Key-Prevent Damage from Forced Entry


Accessory Emergency Lock Box for Spare Door Key-Prevent Damage from Forced Entry


$36.95


【 HOT SALE US EU UK 】 Stainless Steel Door Cabinet Furniture Lock Bolt + Screws


【 HOT SALE US EU UK 】 Stainless Steel Door Cabinet Furniture Lock Bolt + Screws


$0.02


RFID Proximity Door Entry Lock Access Control System


RFID Proximity Door Entry Lock Access Control System


$7.99


FRONT DOOR LOCK SECURITY GUARD


FRONT DOOR LOCK SECURITY GUARD


$19.95


2 Security Locking Lock Sash Jammer for UPVC Windows Doors


2 Security Locking Lock Sash Jammer for UPVC Windows Doors


$1.00


Security Locking Lock Sash Jammer for UPVC Window Door


Security Locking Lock Sash Jammer for UPVC Window Door


$1.00


High Security Door Lock   key on outside turn knob inside


High Security Door Lock key on outside turn knob inside


$35.00


Master Lock Dual Function Security Bar Home Apartment Door Window Glass Guard


Master Lock Dual Function Security Bar Home Apartment Door Window Glass Guard


$23.80


Home Security 14K Golden Electroplate & Leather U Shape Door Chain Lock + Screws


Home Security 14K Golden Electroplate & Leather U Shape Door Chain Lock + Screws


$0.38


NEW Secure A Lock Deadbolt Guard: Portable Door Security Protection Device


NEW Secure A Lock Deadbolt Guard: Portable Door Security Protection Device


$18.98


2PC KEY KEYED ALIKE SECURITY DOOR PADLOCK LOCK 40MM X 90MM


2PC KEY KEYED ALIKE SECURITY DOOR PADLOCK LOCK 40MM X 90MM


$18.81


Koolatron KWC-4 Coca-Cola Personal 6-Can Mini Fridge


Koolatron KWC-4 Coca-Cola Personal 6-Can Mini Fridge


$41.25


Koolatron Coca – Cola Personal Cooler / Warmer provides storage and temperature control for food and beverages. Cool or warm your food and drinks easily. The Coca-Cola Personal Cooler / Warmer looks like a small refrigerator and is perfect for the car, boat or home. It holds up to six 12-oz. cans of soda or beer. It operates on 12V DC or 110V AC with an AC adaptor. Cools food and drinks to 32 degr…

Safety 1st Oven Front Lock


Safety 1st Oven Front Lock



Keep little ones safe from kitchen accidents with this oven front lock. It features a special heat-resistant latch and adhesive that mounts it to the front of a stove. It can be used on ovens that are flush to kitchen cabinets. Incorporates upgraded materials and styling to better complement newer kitchens and home decor….


Lock & Lock Storage 1 Gallon Large Pitcher


Lock & Lock Storage 1 Gallon Large Pitcher


$10.99


Use this pitcher for all your beverages and notice the difference in freshness. This gallon pitcher has been designed with Lock & Lock’s 4-hinge sealing and locking system to keep freshness in and contamenants out. With it’s easy-pour spout this pitcher is great for juice, punch, tea and much more. 16.8 Cups / 4 L / 135 oz…

KidCo No Drill Magnetic Cabinet Locks


KidCo No Drill Magnetic Cabinet Locks


$12.30


Good news: our best-selling magnetic lock now has a self-adhesive mount, so you can childproof your cabinets without drilling them! “Invisible” from the outside, and a must for doors without handles. Mount the lock inside the door (allow 24 hours for adhesive to set). To open, place the key on top. Includes two locks, key, and key-holder….

Lock the Door


Lock the Door


$8.99



Lock the Door & Leave


Lock the Door & Leave


$9.99



Replacement Tubular Latch


Replacement Tubular Latch


$55.00


Replacement passage latch for tubular locks. This latch also fits spindles on all replacement knobs on this grid. Complete with screws. Dimensions: Front 2” x 1”, backset 2-3/8”, edgebore 1”. Skin packed. Blister packed. Strike included. Bright brass finish….

Upstairs, Downstairs - I Dies From Love/Why Is Her Door Lock [VHS]


Upstairs, Downstairs – I Dies From Love/Why Is Her Door Lock [VHS]


$4.94



Medline Bathtub Bar, Locks to Side of Tub


Medline Bathtub Bar, Locks to Side of Tub


$10.88


BATH TUB BARS STEEL Size: 1…

KidCo Sliding Cabinet Lock


KidCo Sliding Cabinet Lock



The no-drill, no-adhesive cabinet lock! Just hook it on, slide it tight – and put your cabinets instantly off limits. This easy-access cabinet lock is fast, non-marring, and very secure. Fits knobs and handles 2″-6 1/2″ apart and up to 1″ thick. Available in White or Charcoal to blend with your cabinets….


Kidco Sliding Door Lock


Kidco Sliding Door Lock


$3.99


Kidco Sliding Door Lock

Front Door  Swr-18w Lock


Front Door Swr-18w Lock


$88.99


FRONT DOOR SWR-18W LOCK

Ultra 44199 Patio Door Lock


Ultra 44199 Patio Door Lock


$17.93


Patio door lock Carded

SHS7100XMS Digital Door Lock


SHS7100XMS Digital Door Lock


$399


Samsung SHS7100XMS SHS7100XMS Digital Door Lock

Door Lock & Passkey


Door Lock & Passkey


$63.99


XPRESSKIT DLPKCHG1 DOOR LOCK & PASSKEY INTERFACE MODULE

Programmable Door Lock


Programmable Door Lock


$60.99


XPRESSKIT XK09 PROGRAMMABLE DOOR LOCK & OVERRIDE SOLUTION

Kidco Door Knob Lock In White


Kidco Door Knob Lock In White


$4.49


Kidco Door Knob Lock In White

Kidco Door Lever Lock In White


Kidco Door Lever Lock In White


$7.49


Kidco Door Lever Lock In White

Xpresskit / PROGRAMMABLE DOOR LOCK / XK09


Xpresskit / PROGRAMMABLE DOOR LOCK / XK09


$53.45


Xpresskit – PROGRAMMABLE DOOR LOCK – XK09

Front Door Swr-10 W Lock


Front Door Swr-10 W Lock


$67.99


FRONT DOOR SWR-10 W LOCK

Front Door Swr-24 W Lock


Front Door Swr-24 W Lock


$106.99


FRONT DOOR SWR-24 W LOCK

CHRYSLER ALL DOOR LOCK


CHRYSLER ALL DOOR LOCK


$75.99


XPRESSKIT CHALL CHRYSLER® ALL DOOR LOCK & OVERRIDE SOLUTION

Mortise Sliding Door Lock 3448T Chr Flush Sliding Door Lock


Mortise Sliding Door Lock 3448T Chr Flush Sliding Door Lock


$189.94


Mortise Sliding Door Lock 3448T Chr Flush Sliding Door Lock Merit Metal Mortise Sliding Door Lock – 3448T – CHR FLUSH SLIDING DOOR LOCK

Directed Electronics Door Lock Interface


Directed Electronics Door Lock Interface


$9.99


Easily lock or unlock your vehicle’s door at the touch of a button with this door lock interface that features 2 built-in 40-amp relays.

Door Lock Brass Plated Push Button


Door Lock Brass Plated Push Button


$27.94


Door Lock Brass Plated Push Button Vetus Denouden Door Lock – DOOR LOCK BRASS PLATED PUSH BUTTON

Kidco Door Lever Lock


Kidco Door Lever Lock


$8.95


The Kidco Door Lever Lock is an award-winning solution to what was once a big problem: how to keep kids from opening lever-style door handles. This door level lock installs easily with no tools required and no need to disassemble the lock or door handle. It conveniently locks one side of the door leaving the other side to function normally and automatically resets after use. For households with young children the Kidco door lock is a true lifesaver!The Kidco Door Lever Lock is available in your choice of clear or white to nicely blend with your room decor. Credentials include a JPMA innovations award ranking on the APPMA’S List of Recommended Products for Pet Safety and a spot on Earnshaw’s A-List. If you have young children and lever-style door knobs don’t miss your chance to own this critically-acclaimed door lever lock! S353-CLEAR – Kidco Door Lever Lock in ClearS353-WHITE – Kidco Door Lever Lock in White Age: Child Color Mapping: White Gender: Unisex

Mortise Door Lock 2035T Pc Mortise Cyl Lock Rh


Mortise Door Lock 2035T Pc Mortise Cyl Lock Rh


$202.94


Mortise Door Lock 2035T Pc Mortise Cyl Lock Rh Merit Metal Mortise Door Lock – 2035T – PC MORTISE CYL LOCK RH

Mortise Door Lock 3483T Pc Lh Cylinder Mortise Lock


Mortise Door Lock 3483T Pc Lh Cylinder Mortise Lock


$154.94


Mortise Door Lock 3483T Pc Lh Cylinder Mortise Lock Merit Metal Mortise Door Lock – 3483T – PC LH CYLINDER MORTISE LOCK

Mortise Door Lock 2035T Pc Mortise Cyl Lock Lh


Mortise Door Lock 2035T Pc Mortise Cyl Lock Lh


$202.94


Mortise Door Lock 2035T Pc Mortise Cyl Lock Lh Merit Metal Mortise Door Lock – 2035T – PC MORTISE CYL LOCK LH

Mortise Door Lock 3483T Pc Rh Cylinder Mortise Lock


Mortise Door Lock 3483T Pc Rh Cylinder Mortise Lock


$154.94


Mortise Door Lock 3483T Pc Rh Cylinder Mortise Lock Merit Metal Mortise Door Lock – 3483T – PC RH CYLINDER MORTISE LOCK
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