$121.59 – Tuya WIFI Smart CO2 Meter TVOC PM2.5 PM1.0 Temperature and Humidity Infrared Sensor Air Quality Monitor – With EU smart socket.
I have just checked coupons. The lowest price I could get is $121.59 for Tuya WIFI Smart CO2 Meter TVOC PM2.5 PM1.0 (in Banggood). Get coupons, create price alert or check price history out! You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood ($121.59)
Banggood warehouse is located in China. Is it cheap? Well, this price is higher than average price ($106.09) I found coupon for you. Check this out.
Link: Banggood product page
Price without coupon: $127.99
1. ($121.59): BGMAI666
this code has to be applied in your cart 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): BG20236Tool, BG183b9c, BGTOOS729, BGBFDAY8, BGALL8
(probably won’t work, but you can try them out)
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
Check out price history chart (for all/most countries) for Tuya WIFI Smart CO2 Meter TVOC PM2.5 PM1.0. The lowest price was: $99.99.
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)).