$39.99 – MoesHouse Tuya Bluetooth Smart Air Quality Carbon Dioxide Detector (Banggood, Aliexpress: MoesHouse Tuya bluetooth Smart Air Quality Carbon Dioxide Detector with Alarm Clock Temperature Humidity Air Tester APP Remote Wireless Monitor (the best price with coupon)).
Use coupon and get MoesHouse Tuya Bluetooth Smart Air Quality Carbon Dioxide Detector for $39.99 (from Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood ($39.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Well, is it a good price anyway? This price is great, coz it’s the lowest in CouponsFromChina database!
Link: Banggood product page
Price: $39.99
This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGRSEPTMOES4, BG15ab24
(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
Here is price history (for all/most countries) for MoesHouse Tuya Bluetooth Smart Air Quality Carbon Dioxide Detector. The lowest price was: $39.99.
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)).