The coupon price for Tuya WiFi Smart Carbon Monoxide Detector is $26.44 (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is best price?
Latest coupon and price update (UTC):
Tuya WiFi Smart Carbon Monoxide Detector Alarm 85dB Sound Warning LCD Digital Display Home Indoor CO Poisoning Siren
Banggood ($26.44)
Banggood warehouse is located in China. I have no active coupons for you right now. Price? Hmmm, price is higher than average (which is $18.84 right now), so better set price alert down below…
Link: Banggood product page
Price: $26.44
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG662cb9
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Tuya WiFi Smart Carbon Monoxide Detector.
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)).