Avantek DB-21 Wireless Doorbell Review

Welcome to our review of the Avantek DB-21 wireless doorbell.

Here you can find details on what you will find in the kit, what kind of volume levels to expect, whether or not it is waterproof and details around the warranty offered…amongst other things!

Clearly, this is a very nice looking wireless doorbell and it has some great features, including memory function (it remembers your preferences after a power cut), 40mm stereo speaker and a very long range!

In terms of volume, it is one of the loudest wireless doorbells we have heard! If you do not like the volume, simply turn it off and let the LED alert you to visitors. This is a fantastic wireless doorbell for deaf people or those who are hard of hearing.

I also want to give a special mention for the push button! When pressed, it lights up green to give the visitor some assurance that the button is working.

The Avantek DB-21 wireless doorbell really is an excellent, top rated wireless doorbell!

AVANTEK DB-21 Waterproof Wireless Doorbell Review – Details

AVANTEK DB-21 Waterproof Wireless Door Bell

What You Get In The Kit

2 × Transmitter (battery included)

1 × Plug-in receiver

2 × Adhesive tape

1 × Key

4 × Screw

4 × Anchor

1 × User manual


You need to consider if you need to add another chime to your wireless doorbell kit because this option does not have the ability to have additional receivers.


AVANTEK DB-21 Waterproof Wireless Door Bell Range

The advertised range for this wireless doorbell is 1300 feet (400 meters), but you must remember that this distance is unobstructed.

It is likely to have a working range of around 50% of that, depending on the objects that you have between the push button and the chime.

The signal can be affected by various objects, including walls, cables, and other electrical items.


There are 52 chimes (some of the choices are bizarre!) and 5 volume levels. The volume can be adjusted from 0 to 115dB.

It is one of the loudest available, so with this option, you are sure to hear all visitors to your home!

You can also set a different tone for each transmitter, which means you know which button has been pressed just by the chime!

Weather Proof

This Avantek wireless doorbell is rated IP55 against water and dust.

IP55 means that it is protected against low-pressure water jets from any direction, which basically means you can use it out in the rain without fear of it breaking!

In terms of the operating temperature, the Avantek DB-21 wireless doorbell will operate within the ranges of -20 to 60. Again, that is plenty for the vast majority of cases.


The installation for many wireless doorbells is easy. For the push buttons, you can either screw them in or use the adhesive strips that are part of the wireless doorbell kit.

The Avantek does have self-adhesive pads to stick the push button onto the surface, which is a great option if you do not want to drill.

I prefer, where possible, to screw them in, just because I don’t trust the adhesive when the rain comes down!


Avantek supply all products with a 12-month warranty and a 30-day money back guarantee and that includes this wireless doorbell!

Support is excellent! You can contact the team on [email protected] and there is a 24 response time for all queries.


The Avantek wireless doorbell is a fantastic option if you want a solution that is both waterproof and extremely loud if you need it to be!

If the volume is not for you, simply turn it off and let the LED alert you to a visitor! that also makes it a fantastic wireless doorbell for deaf people, or those that are hard of hearing.

This Avantek wireless doorbell is one of the best waterproof doorbells and is also an excellent choice for a long-range solution if you need it.

Have you got the Avantek DB-21 wireless doorbell? If you have, what do you think of it? I am very interested in your feedback, so please leave a comment below or contact us!

Good luck!

Must Read

Looking For A Doorbell That Works With Alexa?

If you are looking for a doorbell that works with Alexa, then we have some excellent options right here for you. All are Alexa certified by Amazon. Some options on the page are not wireless doorbells, so please check before you buy!



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