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Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Product Safety Level Class B, Door Lock Weight 4.2kg, Operating temperature -25°C ~ +70°C, Door Lock Prompt Tone English/Chinese, User Capacity “50x fingerprints / 50x permanent passwords / 25x NFC devices / 25x periodic temporary passwords / 8x one-time temporary passwords”, Door Lock Panel Size 380.9*76.9*25mm, Executive Standard GA 374-2019 / GA/T 73-2015(lock core) / GB21556-2008, Brand Aqara(Ecosystem), Lock Core Security Level Class C (the highest level), Power Supply “8x AA batteries (6V DC / not included) / Type-C emergency power supply (5V DC)”, Working Humidity 0~93% RH / no condensation, Wireless Connection Bluetooth 5.0, Model N100
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($256.22): BGSmart6
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGn100, BG2020NS, BGAQA15, bGhOnEy10, BG8883, BGLB35, BGL35, BG11518, BgcLuBofErtA10, 7bcdf9, BGCuponation10, BGHONEY2110, BG84617a, BGAQA929, BGeee749, BG4a7a54, ADMITAD2212
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Aqara N100 Smart Door Lock [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Aqara N100 Smart Door Lock.
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)).