Gosund Smart Light Switch (Banggood, Aliexpress: Material Full-PC / V0 Fireproof, Network 802.11 b/g/n Wifi 2.4Ghz（Only）, Voltage 230V, Product name Gosund Light Switch（2 gang）, Support App Gosund / Google Home, Max load 10A, Size 89x89x47 mm (the best price with coupon)).
Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGcou850, BGa5f096, BGON850, BG50d2c9, BGD11035, BGB5044, ADMITAD2212, BGSmart6, BGAlerabat1, 8Couponsde, MVC8SPRING, 8BGwbg2204, BGJUNEGSG9, BG8ReviTrage, Cuponation9
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for Gosund Smart Light Switch? There we go. The lowest price was: $8.62.
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)).