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AVANTEK CB-21 2 Transmitters Black with 1 receiver Wireless Doorbell with 52 Melodies and 1000ft Range
Available offers (2)
Current
2 Transmitters Black with 1 receiver
Retailer
€16.90
Available to order
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Price history by offer
Volatility: MediumFeatures
- 1000 ft wireless range
- 52 melodies
- IP55 waterproof and dustproof
- Memory function retains settings after power outage
- 115 dB maximum sound level
General specs
- Brand: AVANTEK
- Model: CB-21
- Seller: Retailer
- ID: B07KCCF3NB
- Shape: Square
- Voltage: 3 Volts
- Material: ABS
- batteries: 2 CR2 batteries required.
- Item Weight: 6.4 ounces
- Part Number: CB-21
- Sound Level: 115 dB
- manufacturer: AVANTEK
- Power Source: AC & Battery
- Type of Bulb: LED
- Product Dimensions: 2.8 x 0.6 x 3.1 inches
- Included Components: 1 Ă— Plug-in receiver, 2 Ă— Transmitter, 1 Ă— User manual, 2 Ă— Adhesive tape, 1 Ă— Screwdriver, 4 Ă— Screw, 4 Ă— Anchor
- Average Battery Life: 3 years
- First listed by seller: March 30, 2025
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Retailer
Shipping options
Delivery to 
United States
United States
Available
🎵 52 Melodies - With a symphony of chimes at your fingertips, picking the perfect tune for your doorstep has never been easier. Whether you're into classic dings or something more modern, we've got you covered.
🏠1000ft Wireless Range - Imagine this: you're in the backyard, lost in your favorite book, and—ding dong!—you hear the doorbell clear as day. That's the magic of our extended range, ensuring you're always in the loop, no matter where you are at home (or even in the office).
🌧️ IP55 Waterproof - Rain or shine, this doorbell stands its ground. It's like the postal service of doorbells—nothing stops it from delivering (except maybe a power outage, but we've got that covered too).
🔊 115dB Loud Sound - Loud enough to wake the neighbors? Maybe. But definitely loud enough to cut through the chaos of a busy household or to be heard by those who might need a little extra volume. Consider it your auditory lifeline.
⚡ Memory Function - Because who has time to reset their doorbell after every power outage? Not you. Our doorbell remembers your preferences, so you can pick up right where you left off—no fuss, no muss.
🔋 Long Battery Life - Three years on a single battery? That's right. We're not just saving you time; we're saving you from the dreaded 'low battery' chirp that haunts your dreams. Set it and forget it—until 2026, at least.
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
AVANTEK CB-21 2 Transmitters Black
|
AVANTEK CB-11
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AVANTEK BA-11
|
AVANTEK DB-21
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SadoTech ST-FX-C White
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BO YING A-808 White
|
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| Brand | AVANTEK | AVANTEK | AVANTEK | AVANTEK | SadoTech | BO YING |
| Model | CB-21 | CB-11 | BA-11 | DB-21 | ST-FX-C | A-808 |
| Color |
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| Price | €16.90 | €11.48 | €12.81 | €23.66 | €16.90 | €8.89 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 6, 2026 | May 16, 2026 | May 20, 2026 | May 15, 2026 | May 15, 2026 | Mar 21, 2026 |
| Voltage | 3 Volts | 3 Volts | 110 Volts | 110 Volts | ||
| batteries | 2 CR2 batteries required. | 1 CR2 batteries required. (included) | 1 A batteries required. | |||
| Item Weight | 6.4 ounces | 5 ounces | 4 ounces | 4.6 ounces | ||
| Part Number | CB-21 | LD-CB-11-A | ST-FX-C | A-808 | ||
| manufacturer | AVANTEK | AVANTEK | SadoTech | BO YING | ||
| Product Dimensions | 2.8 x 0.6 x 3.1 inches | 2.8 x 0.6 x 3.1 inches | 3.2 x 1.5 x 3.5 inches | 77.17 x 26.77 x 3.94 inches | ||
AVANTEK CB-21 2 Transmitters Black
€16.90
When this device makes sense
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