HomeKit DoHome Temperature Humidity Sensor [EU] (Banggood, Aliexpress: Humidity measurement accuracy: +/-%3RH, Power consumption: 350uA, Temperature measurement accuracy: +/-0.5C, Temperature measurement: -40C-80C, Size: 40*40*18mm, Power supply: 3.1-5.5V, Humidity measurement: 0-99.9%, Humidity resolution: 0.1%RH, Temperature resolution: 0.1%C (the best price with coupon)).
Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. There are no coupons for this product in Banggood. I don’t know if this is a good price – number of records in my database is too low!
Link: Banggood product page
Price: $-3
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 and https://couponsfromchina.com/short/5cd
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was $2.99).
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)).