AVANTEK Wireless Doorbell over 1300 Feet Wireless Range, DB-21 Waterproof Door Bell Kit with 2 Buttons, 56 Melodies & 5 Volume Levels
Condition: New
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30-day refund / replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 6 left in stock, order soon!
Arrives
Tuesday, Dec 16
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Size: 2 Buttons+1 Receiver
Features
- 1300 FT/ 400 M ULTRA LONG WIRELESS RANGE: Will not interfere with other equipment in your home or those of your neighbors; ensures you will never miss a visitor, even if you are a few rooms away or on another floor
- EASY TO SET UP: 2 transmitters included; can add more AVANTEK RB-1 and CR-1 receivers for increased coverage; simply fix the transmitter on the wall without any wiring; includes 4 screws, 4 anchors, 1 key and 2 double-sided adhesive pads
- TAILOR YOUR TRANSMITTER: 40 mm stereo speaker delivers rich and crisp sound; 52 melodies and 5 adjustable volume levels with a maximum setting of 115 dB; set a different ring tone for each transmitter so that you know exactly which doorbell has been rung
- HIGH PERFORMANCE: The transmitter has ultra-low power consumption; uses a lithium battery that boasts 3-year maximum lifespan; IP55 dustproof and waterproof rating; works between -4 F to 140 F; withstands various harsh weather conditions
- MEMORY FUNCTION: Remembers your last melody and volume level after a power outage; no need to reset to your previous settings; convenient and easy-to-use design for an enhanced user experience
Manufacturer: AVANTEK
Part Number: DB-21
Item Weight: 8 ounces
Product Dimensions: 3.5 x 0.7 x 3.5 inches
Item model number: DB-21
Batteries: 2 CR2 batteries required. (included)
Is Discontinued By Manufacturer: No
Size: 2 Buttons+1 Receiver
Color: Black
Style: 2 Buttons+1 Receiver
Material: ABS
Shape: Square
Power Source: ac
Voltage: 3 Volts
Item Package Quantity: 1
Included Components: 2 × Transmitter, 1 × Plug-in receiver, 2 × Adhesive tape, 1 × Screwdriver, 4 × Screw, 4 × Anchor, 1 × User manual
Batteries Included?: Yes
Batteries Required?: Yes
Battery Cell Type: Lithium Ion
Average Battery Life: 3 years
Date First Available: December 10, 2017
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Dec 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
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- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Size: 2 Buttons+1 Receiver
For the price, this doorbell is a steal. Easy to install, loud enough to hear even if I’m pretending not to be home, and has a bunch of chime options—including some that make my house feel way fancier than it actually is. Only downside? Now people actually use it. If only it came with a feature that scared off solicitors and in-laws, it would be perfect. Five stars for functionality, but I might start pretending it’s broken.
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Reviewed in the United States on March 4, 2025 by Breadbag
Size: 2 Receivers + 1 Button
This doorbell is so easy to install, it only took me about half an hour and it is Perfect. Multiple people can connect to the app at the same time and view the feed remotely. It's ding dong sounds are loud enough for the family to hear no matter where in the house they are. You can talk to the people outside from the app wherever you are and you can also set an automated response to speak out when there is a person detected outside.
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Reviewed in the United States on January 1, 2025 by Sam
Size: 2 Buttons+1 Receiver
Reliable & durable
Reviewed in the United States on September 16, 2025 by Edgar H. Tan, MD
Size: 2 Buttons+1 Receiver
Let me tell you, it was a real breeze to install this unit. The only bad thing is that it takes up room for the receptacle. I'm going to run a new line for this when it gets warm. I was going to need to replace the wire for the doorbell I had. For openers, the wire alone was more than what I paid for this door bell. Installation was done in half an hour - WAY LESS TIME than running the wire I was going to do. A lot less headache than fixing the original. Playing all the different tunes gave me a good chuckle and the tunes were just great. Nice package. Have not installed the second button yet but I did program it. Instructions were pretty good and programming the switches is very easy. One for the front door and the other for another use. Even thought about having it in the car like for signaling to come out to unload groceries without blowing the horn or calling on the cell phone. Just a thought for the second button. Unit was well worth the money all around.
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Reviewed in the United States on January 10, 2020 by Fred
Size: 2 Receivers + 1 Button
I purchased this for my office and was pleasantly surprised at the quality vs cost. It offers a good range and multitude of sound selections.
Reviewed in the United States on August 2, 2025 by Steven
Size: 2 Buttons+1 Receiver
This doorbell was exactly what I was hoping to find. I bought it because it has two transmitters, which is really helpful to have one at the front door and one at the back door due to how my house is set up. I was able to set different chimes for each doorbell so I know which door to go to which is a great feature. Speaking of setup, this was incredibly easy to install. I've been using this for months now and haven't had any issues. The adhesive is working great, and the transmitters are still sturdy in the same place I put them. I like that the chime volume is adjustable. I don't like really loud doorbells, so I was able to set this to just one level above silent, and it's perfect. I can hear it from the next room, but it doesn't startle me. In addition to that, the doorbell itself looks nice. The black with green accent is stylish and modern, and I'm so happy with my purchase.
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Reviewed in the United States on December 25, 2022 by Heather D.
Size: 2 Receivers + 1 Button
I'm pretty happy with this new doorbell. My old wifi doorbell still worked but only had one receiver. My basement is partially finished. If I am down there, I can't hear the old one. This basement was waterproofed years ago by another owner. I'm not sure if that contributes, but it is like a bunker down there sound-wise......you hear nothing from outside. It's nice for it to be so quiet but that is why I chose to update. Now if the doorbell rings the 2nd receiver down there lets me know. It's comical that there are all these melodies to choose from. I still prefer "ding dong." lol
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Reviewed in the United States on August 13, 2025 by Little Birdie Little Birdie
Size: 2 Buttons+1 Receiver
I'm across town mowing a warehouse lot that we own when I get a phone call from my wife. She smells smoke! By the time I rush home she's discovered that the downstairs doorbell connector is smoking red hot. The doorbell unit fits inside one of those old recessed wall telephone cabinets. We air out the house and I disconnect the doorbell transformer in the basement. Could have been the old frayed wiring in the wall (and could have burned down our beloved 95-year-old home) but turns out the doorbell button got stuck on when the FedEx guy dropped off a package and that shorted out the ringer unit. I count my blessings and order this remote unit. Would have done this years ago but all the remote doorbell receivers sounded cheap and tinny. This one sounds very good for its size. I have metal storm doors but I mounted the transmitters on the wooden door frames next to window lights and they work perfectly. Used adhesive strips to mount the transmitters but next time I paint the door trim I'll remount them with screws, just in case. This might very well be one of our best purchases for the old house; the less old wiring I have running through the walls the better we sleep at night.
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Reviewed in the United States on September 27, 2020 by Watson