security door, Material: Stainless Steel, Length of Password: 6 Letters, Size: 365MM*164MM*84MM, Emergency Power Supply: Micro USB, Work temperature: -25~65℃, Fit for: Wooden Door, Thickness of the door: 45-120MM, Product Size: 362MM*75MM*26MM.
Get coupons, create price alert or check price history out! Best price?
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($117.59): BG2020NS
2. ($124.51): AFfbG10
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): Xiaomi001, BGBFAFF2019, BGBF001
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Grey Digital Door Lock. The lowest price was: $106.39.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).