Your future self just high-fived you: $43.99 (Banggood). FNIRSI SFD-02 4-IN-1 Formaldehyde Detector Indoor Air Quality Monitor Touchscreen HCHO TVOC Time Humidity Display Smart Alarm Type-C Charging for Home Office Test – White.
Updated: 22-08-2025
Banggood
Warehouse in China.
Link: FNIRSI SFD-02 4-IN-1 Formaldehyde Detector
Price: $43.99
Additional Banggood coupons:
1. First page
2. Second page
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
FNIRSI SFD-02 4-IN-1 Indoor Air Quality Monitor Touchscreen Formaldehyde Detector HCHO TVOC Temperature Tester Type-C Charging | $55.51 | – |
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Price history and price alert
Not enough data to show price history chart… $43.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).