ST-668 Plus Touchscreen Keypad Door Handle with Lock Key

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Finish: Matte Black
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ST-668 Plus Touchscreen Keypad Door Handle with Lock Key

ST-668 Plus Touchscreen Keypad Door Handle with Lock Key


ST-668 Plus Touchscreen Keypad Door Handle with Lock Key

Finish: Matte Black

A Few Simple Steps to Install the Electronic Keypad Door Handle

Make Your Apartment More Convenient and Safer

✔ Convenient keyless door handle with touchscreen door lock - Are you suffering from being unable to open the front door handle lock after dropping the keys? Have you imagined how those days will be easy when you don’t have to keep the front door handle lock keys in your pocket?

✔ Programmable and smart door lock to customize the ideal security - SIGNSTEK™ touchscreen electronic and keyless door handle features a touchscreen keypad, emergency mechanical key, anti-peep password, interchangeable door handles, mute function, stay unlocked function and waterproof function.

Programming Video guide:

✔ Easiest installation - As long as the aperture of SIGNSTEK™ ST-668 Plus smart door handle lock is the same as your current front door lock, installation is just a piece of cake. It comes with a hexagon screwdriver, follow the instructions and you will finish the assembling in 10 minutes even if you are not a LockSmith.

✔ Lost the codes? We have a hole! - No need to call the locksmith. Remove the keyless door lock handle with a wrench. Insert the mechanical key. Turn the key clockwise and the electronic door lock opens.

✔ One year after-sale customer service -Free Shipping!- We offer replacement, return or refund if you are not satisfied with our products.

FAQ of programmable door lock ST-668 Plus

Q: What is the difference between the keypad door handle ST-668 and ST-668 Plus?

    A: As shown in the image, ST-668 number pad door lock has updated [Stay unlocked settings] of ST-668 to [Password-free Mode] of ST-668 Plus.

ST-668 stay unlocked settings:

Updated ST-668 Plus password-free mode:

The ST-668 Plus door handle set [Password-free Mode] is introduced as follows,

First, you can enter “programming code”, second press “#” button, then press ”6” button, finally press ”#” button and complete the [Password-free Mode] setup.

Q: How to use the password-free mode of keypad door lock ST-668 Plus?

    A: When your guests come, you can set a password-free mode of the digital front door lock so your guest can unlock the door with any code and #.



Q: How do you lock this touchpad door lock from the inside?

    A: It auto locks after 5 seconds.

Q: Is this reversible electronic door handle for left or right handle doors?

    A: Yes, it is.

Q: Does this have a touchpad on both sides?

    A: Just the front side. Also, don’t forget to keep fresh batteries in it and the spare key where you can still have access into whichever room you want. The door keypad works super great for our needs.

Q: What about if is it raining? The touchpad works wet?

    A: It still works after raining.

Q: Does this electronic door handle lock every time you shut the door or can you delete that part?

    A: There is a code you can press to keep unlocked. You punch in the entry code, then the # then * then #. That will unlock the unit. Then to relock when you leave, press * then # and that will lock it.


Why choose SIGNSTEK™ ST-668 Plus Electronic Keyless Door Handle?

  • Anti-peep password: Users can create any random digits before or after the correct password (random digits + correct digits + random digits).
  • Signstek’s Keyless Smart Door Handle has touchscreen Keypad Lock that provides good performance in darkness, and also avoids the problems caused by unstuck physical buttons.
  • Built-in advanced PMS, ST-668 Plus programmable door lock's power management system ensures that each set of batteries can play their longest service life.
  • If the battery runs out for unknown reasons, you can use the included emergency key to access the room.

Product Information

Manufacturer Signstek
Item Weight 4.29 pounds
Package Includes 1*Signstek lock
2*Emergency Keys
1*User Guide
Package Dimensions 8.31 x 7.8 x 3.9 inches
Door thickness 1.38 inch -1.97 inch
Handle size 5.2*1.18*1.89 inch



  • 5-7 days domestic.

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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

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