Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Rated Current: 63A, Product Item: Wifi Smart Circuit Breaker, Installation: Din Rail, Connection: WIFI 2.4G, Rated Voltage: 230V, Product Model: SMT002, Certificate: CE
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):
Banggood
Banggood warehouse is located in Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database. You can get coupon down below.
Link: Banggood product page
1. ($24.55): BG8ReviTrage
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG1840500, ADMITAD2212, BGb216e1, BGSmart6, 8BGwbg2204, BG57a7ec, BG13de82, hoNEYbGdeAlS, BGJUNEGSG9, Cuponation9, BG7db6fa, BGHU2317
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – 1P 63A eWelink Single Phase Din Rail WIFI Smart Switch ($-3)
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $19.99 though.
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)).