This is a very nice unit that is filled with features. I like the fact that you can adjust the volume. I also like the halo light and strobe lights. If needed you can turn the volume completely down and use just the alert lights. There are several tones plus you can add more. You can sync multiple units to just one push button. You can install it on the wall or just place it on a shelf. The push button itself illuminates when pushed. It has a very good range. In fact I like these units so much that I deactivated my wired system and only using these units. Another bonus is that you still have a doorbell even if the power is out. I am using three units, one in the main house, a second in a distant sunroom and the third cheaper Series 3 for the garage. The front door push button activates all 3 units. If needed you can also use multiple push buttons for different doors. Wireless is taking over and I like it.

The doorbell was fine until I downloaded MP3 tones and loaded them onto the unit. The instructions say "You can install any MP3 file as a custom tune." Not true. I downloaded 11 different tones. About 3-4 worked, and the rest would not play. I tested all of the tunes on the computer before and after loading them on the doorbell, and there is nothing wrong with the tones. My guess is that maybe there is an issue with limited storage on this device, but there is nothing in the instructions to indicate the storage size/limitations or any limitations to how large of a MP3 file you can load onto the device. And to be clear, the file size does not seem to be the reason why some tones will play and others won't, as some that won't are not as large of files as others that do play. In any case, I paid more for this item because I was counting on being able to load holiday tunes, but now I have buyer's remorse. I would have bought a less expensive item if I had known it would not work as advertised.

This is a great doorbell!

While it is compact and well-designed, it is also packed with features that elevate it above the standard wireless doorbell.

My favorite feature is the halo light: it is great to get a visual alert as well as an audible one.

It is also quick and easy to mute the doorbell if you don't want to be disturbed by any ringtones.

Also worthy of mention: the ability to add accessories. I just ordered a Honeywell motion detector to add to the system: it paired seamlessly and provides its own unique audible and visual alert. (The halo light illuminates in a different pattern and color than the doorbell so you will never confuse a motion alert with a doorbell push.)

To be clear, I am referring to the Series 9 doorbell. It seems that Amazon is lumping together reviews for a lot of different doorbells, so just want to underline that some of the features I referred to are only available on the Series 9. IMHO, it is worth the few extra dollars to get the 9 if you want to add your own custom ringtone or add on any accessories.

Easy to install and program. The sound is very good and no wire connections need to be made. This unit runs off of 4 C-Batteries and the button door bell (that lights up when pressed) transmits quickly to the inside unit.

This replaced the house's original 1970 door bell that always look awful on the wall in our living room. This unit is smaller and works better in today's world!

There are ringer choices and this product is a win-win in my world. Check out the video that tells about this item.

Nice device, actually bought 2, one receiver on main level and one receiver in finished basement.

The outside button operates both with single touch. When the button on the front door is pressed it plays a certain tune on each of the receivers, when the side door button is pressed a different tune is played on both receivers, this way you know which door the person is at.

Had to turn down the volume to 75%, just too loud at 100% which would be good if you have a bigger house, but mine is only 1300 square feet on the main level and 1300 square feet on the basement level. The basement receiver is at the far end of the house, and I was a little bit worried that it might not get the signal from the doorbell button at the front and side doors, but this is not an issue, both doorbells ring at the same time from either door button, 75ft distance.

Do I recommend this? Absolutely!