ST-668 Plus Touchscreen Keypad Door Handle with Lock Key, Black/Silver

73 In stock
$136.91 $88.99
Free shipping in the US and Canada.
Fast delivery. Orders shipped in 24 hours and delivered within 3 days.
Shipping policy.
Finish :
Matte Black
Satin Nickel
We are a factory direct selling brand with ample inventory. If you want to place a bulk order with more than 10 items, please contact us at to enjoy exclusive wholesale prices.

A Few Simple Steps To Install The Electronic Keypad Door Handle With Smart Lock Deadbolt

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 handle, mute function, stay unlocked function and waterproof function.

✔ 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 firemen. 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 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.

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 #.

Updated ST-668 Plus password-free mode:

ST-668 stay unlocked settings:

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 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 accessed 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 every time you shut the door are can you delate 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 SIGNSTEK™ ST-668 Plus Electronic Keyless Door Handle with Smart Lock Deadbolt?

  • 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 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 locker
2*Emergency Keys
4*AAA battery
1*User Guide

Package Dimensions 8.31 x 7.8 x 3.9 inches
Door thickness 1.38 inch -1.97inch
Handle size 5.2*1.18*1.89inch



  • 5-7 days domestic.

Customer Reviews

Based on 23 reviews Write a review

Free Shipping

SIGNSTEK™ offers free shipping for the contiguous 48 U.S. states. Transit time is 5-7 business days. 

All SIGNSTEK™ products are stored in warehouses in Amazon warehouse or UPS warehouse in United States/Canada, and all our products use FBA or UPS shipping.

United States/Canada  Out of US.

Guaranteed Arrival

3-5 bussiness days or less 


In orders with more than one item, the processing time will be based on the item with the longest processing time. All orders can be shipped out within 24 hours on weekdays. Please note that the processing time is not included in the shipping time.

During public holidays, transportation time or processing time may be affected (up to 72 hours delay) because manufacturers and couriers will restrict their operations during this period. Although this is unfortunately out of our control, we will try our best to improve on this issue.

Order Successful
After you have successfully placed your order you will receive email confirmation from us. If you have any requests for your order, kindly let us know as soon as possible before your item enters the processing stage.

Contact us
If you have any urgent questions about the shipping, just feel free to contact us on our Facebook home page or send an email to us.

Return & Refund


SIGNSTEK provides a 30 days return or refund guarantee. If you’re not satisfied with your purchase and want to request a return or refund, please contact our customer service for the return or refund process. 
To be eligible for a return, your item must be unused and in the same condition as you receive. It must also be in the original packaging.


a. Customers will only be charged once for shipping costs (this includes returns); No-restocking to be charged to the consumers for the return of the product.
b. In the event ships for free, the customer will be informed of the return shipment cost (estimates may be given based on our own costs in shipping to customers)

Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Hello customer. Welcome to SIGNSTEK! We will keep in touch with all our customers.

Please differentiate your order to get straight fast service:

1. Product Consulting:

Talk to the Facebook runner:

2. Official Order:

Please send message to or use Facebook Messager. Remember to tell us your order number.

●If Your Product is Purchased from Amazon:

Just click and send an email with your Amazon order ID directly to

ST-668 Plus Touchscreen Keypad Door Handle with Lock Key, Black/Silver
You have successfully subscribed!
Enjoy 5% Coupon Code.
Code: sub5
Copy and use it on check out page.
This email has been registered.