$10.99 – SONOFF SNZB-04P Zigbe Door Window Sensor Tamper Alert Smart Scene Remote Control Smart Home ZHA Work with Alexa Google Home.
You can get SONOFF SNZB-04P Zigbee Door Window Sensor for $10.99 using coupon code (in Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood ($10.99)
Banggood warehouse is located in China. Well, is it a good price anyway? My database says that it’s pretty good price, coz average is $11.49. There is one coupon right now! Check this out.
Link: Banggood product page
Price without coupon: $11.99
1. ($10.99): BGEUSNZB04
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGEUNEWYR2
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for SONOFF SNZB-04P Zigbee Door Window Sensor? There we go. The lowest price was: $10.49.
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)).