, Temperature 0 ° C ~ 50 ° C, Battery pack Lithium 2000mAh / 3.7V, CO2 400 ~ 99999ppm, Humidity 0 ~ 99%, Wireless connection WiFi 2.4 GHz, Bluetooth 5.0, PM2.5 / PM10 0 ~ 500ug / M and sup3, Weight 143g, Area 63.6 * 46 * 54.6 mm, 1A, Product Air Quality Monitor, 59.9 * 49.9 mm, Screen Grease in one color, Brand ClearGrass (Xiaomi Cooperation Brand), Energy input 5V.
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Aliexpress
There’re some similar (or not) items on Aliexpress
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Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($67.99): BGTYOJ758
2. ($78.99): BGTYOT758
you should apply the coupon 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): BGXINPI758, BgcLuBofErtA10, BGDEFR758, BGDETD758, BGAFF10OFF, BGCuponation10, BGMATH758, BGMAFO758, 13f142, BGHONEY2110, BGMAYTD758, BGQP758, BGISF758, BGTYOC758, BGISOD758, BGTYOD758, BGTYGQ758, BANGGOODSD
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for ClearGrass Air Quality Monitor? There we go. The lowest price was: $67.99.
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)).