Updated: 04-02-2026.
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price |
|---|---|---|
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1-10PCS SONOFF DW2-RF 433MHz Wireless Door Window Sensor Works with SONOFF RF Bridge EV1527 Smart Scene Home Secuirty Devices | $7.37 |
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Price history and price alert
Here is price history (for all/most countries) for SONOFF CD100S Door Window Alarm Sensor. The lowest price was: $2.99.
Price records source(s): Gearbest
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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)).