Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 4.60 USD | – |
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 5.35 USD | – |
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 6.09 USD | – |
 |
Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 9.48 USD | – |
 |
4x Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 17.30 USD | – |
 |
4x Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 18.41 USD | – |
 |
4 pcs. Xiaomi Mijia Bluetooth Hygrometer Thermometer 2 | 18.72 USD | – |
 |
4x Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 19.43 USD | – |
 |
Xiaomi Mijia Bluetooth Smart Hygrometer Thermometer | 19.53 USD | – |
 |
4 pcs. Xiaomi Mijia Bluetooth Thermometer Hygrometer 2 | 21.11 USD | – |
 |
4 pcs. Xiaomi Mijia Bluetooth Thermometer 2 | 23.69 USD | – |
More on Aliexpress… Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (31.49 USD): BGAFF10OFF
(CouponsFromChina.com tip: you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): 502C6B, 8a26ba, e2bcea, vipupgrade8, c40d71, TTxBG10, BGss8%hl, BGPLEDNI169, BGPHMI, AFfbG10, BG25GAGA, BGPHP169, BGPIJ16, BGMFML19, 0e7f33, BGHOMEG12, FBCOUPON1, bGhOnEy10, BGHSJGYY, BGdragonBoat, BGHome15%, BGHOMEA15%
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Mijia Bluetooth LED PIR Smart Night Light.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).