Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – DIGOO DG-HAMA 433MHz Smart Home Security Kit [EU] (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood).
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): Techki433GR, 0404digoo, BG75HOSA, BGDigoo15%, bg72dghama, BG72HAMA2G, BGQHAMA2, BGDHAMA2, BG09HAMA, BGP1HAMA, BGA1HAMA, BGDGFHA, BGaDmITAd, aff7off, bgchinafest, 7d18f7, BGDGHA2, BG11HA2G, BGBFAFF2019, BGCITYADS2019, Email5, Email3, 2020CNY, BGVDay10%off, BGDG15, BGRHMCN, BG2GHOSA, BGSAMH, BGSMARTHO, 20%DG422, bGhOnEy10, BGDGHAG, BGSMOFF, BG2GHAMA, BGDGASG, BGSAMRTH, BGHAMAH09, BGHAMAD, BGDGMA62, BgcLuBofErtA10, BGDGHAGR, BGDGHA, BGHAMASC, BGAFF10OFF, BGHAMA, BGSTHO15, BGHAMAFE, BGCuponation10
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – DIGOO DG-HAMA 433MHz Smart Home Security Kit [EU] (-3 USD)
Price history and price alert
Price history (for all/most countries) for DIGOO DG-HAMA 433MHz Smart Home Security Kit is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).