Measuring output PM2.5, PM10 Range 0.0-999.9 ug/m3 Power supply voltage 5V Maximum working current 100mA Sleep current 2 mA Operating temperature range -20-50℃ Response time 1s Serial data output frequency 1 time/s Particle diameter resolution Less than 0.3um Relative error 10% Product size 71x70x23mm.
Check coupons or create price alert down below. What is the best price?
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.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($27.89): Terence
2. ($27.89): 2203ActiesNL
3. ($28.19): BG00c906
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BG18PM, BG12module, BGNova, FBCOUPON1, BGRUMB15, BGAFF10OFF, 13f142, BGHONEY2110, BG2589f4, 00c906, ADMITAD2212, 2022ACTIESNL, Tabby20
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Nova PM SDS011 Air Quality Sensor [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for Nova PM SDS011 Air Quality Sensor is here. The lowest price was: $17.99.
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)).