Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – DIGOO DG-HOSA 433MHz PIR Detector (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. Hmmm… There is no active coupon in Banggood at this moment. This is new product in my database, so I don’t know if this price is good.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGDigoo15%, aff7off, BGaDmITAd, bgchinafest, BGCITYADS2019, BG9NY, 2020CNY, BGVDay10%off, BGDG15, BGSAMH, BGSMARTHO, bGhOnEy10, 20%DG422, BGSM15, BGSMOFF, BGDGASG, BGSAMRTH, BGDGHSPG, BgcLuBofErtA10, BGDGKITG, BG15SH12, BGSTHO15, BGAFF10OFF, BGHSPIR, BGHONEY2110, BGSHOM15, 13f142, BG4a7a54, BG9b5bc9, BG48ea00, ADMITAD2212, BG554376, BGSmart6, 8Couponsde, MVC8SPRING, 8BGwbg2204, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9, TTSUMMER8, Cuponation9, 9OFFSUMMER, BG263c68
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – DIGOO DG-HOSA 433MHz PIR Detector (-3 USD)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 8.99 USD.
You can set price alert (for Banggood).