View on Amazon
No-fee cameras
Find cameras and video doorbells that can stay useful without monthly fees, while checking storage, alerts, clips, and plan-gated features.
AVANTEK CW-21 2 remote buttons with different tones Mini Waterproof Wireless Doorbell
Available Options
Current
2 remote buttons with different tones
Amazon
€22.38
Available to order
Price history by variant
Volatility: MediumFeatures
- 1,000 ft ultra long wireless range
- 52 melodies with CD quality sound
- IP55 waterproof and dustproof
- Memory function retains settings
- 2 remote buttons with different tones
Product details
General specs
- Brand: AVANTEK
- Model: CB-21
- Battery Life: 3 years
- Power Source: AC & Battery
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
?
Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
€22.38
Free shipping
New
Third-party seller
FBA
Shippable
Offers updated: 8/26/26
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
Price History for seller Amazon
Shipping options
Delivery to 
United States
United States
Available
Looking to give your home's entrance a little upgrade? Meet the AVANTEK CW-21 Wireless Doorbell—where practicality meets ease in a way that actually makes sense. Imagine this: a doorbell that doesn't just whisper but actually reaches you from up to 1,000 feet away, because let's face it, we're not all camped out by the front door. And with 52 melodies to pick from, you can finally ditch that boring 'ding-dong' for something with a bit more personality. Oh, and it's got an IP55 waterproof rating, so a little rain (or a lot) won't stop it from doing its thing.
But wait, there's more (and no, we're not just saying that). The CW-21 is smart enough to remember your favorite settings, thanks to its memory function—because who has time to reset things after a power outage? Plus, it comes with two transmitters, each singing their own unique tone, so you'll know whether it's the front door or the back without even looking. And despite packing all these features, it's got a compact size that won't hog your outlet space. Perfect for homes, offices, or even that one classroom that still uses a doorbell for some reason. The AVANTEK CW-21: reliable, stylish, and surprisingly not annoying.
AVANTEK CW-21 1,000 ft ultra long wireless range
€22.38
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.