Humidity Accuracy ±1% RH, Wi-Fi Support 2.4G IEEE 802.11 b/g/n, Temperature Measure Range 0℃-60℃, Power Supply DC 5V/1A, Measure Range 0% RH~99% RH, Size 65*65*17mm/2.5*2.5*0.6in, Temperature Accuracy ±1 Humidity, Weight 45.8g, Material ABS.
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
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($20.67): BG589b2e
coupon code has to be applied in shop’s cart 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): BG21DC4, BGwhielabel, BGTUYA174, BGJUFR374, BGYR374, BGJUFO374, BGPDhome45, BG10OFFAFF1, BGTYOC374, BGISOG374, BGSPHOME35, BGTYSR374, BGTYSK374, BANGGOODSD, BGTYOU374, BGUdb49, BGUbf44, BGTYOP374, BGTYOI374, 00c906, BGJATY374, BG00c906, BGHealth10D, 2022ACTIESNL, BGHB218, BGGRMA156, BGMAYB234, BGXPAP67, BGGRAP141, 2203ActiesNL, BGHECARE1, BG2294d8, BG1c4b4a, BGHUXC038, BG77a473, BG4ee866, Cuponation9, BGb8a272, BG75597c, BG21b480, BGe7add4, BGfe422c
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Tuya WIFI Temperature Humidity Smart Sensor? There we go. The lowest price was: $11.99.
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)).