Basically copy coupon, view price history or create e-mail price alert. Best price?
Temperature: -40℃~80℃
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($12.74): MVC8SPRING
apply it 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): elec, e2bcea, SONOFF15, BGVDay10%off, bGhOnEy10, BGTT10, BGSMOFF, BGSONOFF15, BGELIG0920, BgcLuBofErtA10, BGSONOFF16, BGSTHO15, BGHONEY2110, BGSHOM15, BGSHE15, 13f142, 6GSGIT, ADMITAD2212, BGSmart6, BG15Sonoff
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for SONOFF AM2301 Temperature And Humidity Sensor? There we go.
Price records source(s): Gearbest, 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)).