When we changed outside door bell button, we lost the bell tone and have only the buzzer. How do we get a nice tone back?

I'm guessing that the old push button was either dim or not lit at all, and new outside push button glows...If that's the case, I think your transformer is a bit weak, possibly due to the slight increase in load with new button's light. Buzzing is a key clue - the solenoid (electrically powered plunger whose motion would cause the ding dong) is sitting there vibrating, instead of moving cleanly.Assuming your doorbell is a 16V model, Nutone makes a slightly more powerful doorbell transformer, model C907 (Sold on Amazon) - this one can handle two or three doorbells, so it has enough oomph to handle normal loads... Changing a transformer may require a licensed electrician in your area, so please proceed with caution.Good luck!

What can of transformer does it require: ac or dc?

It uses a 16V 10VA transformer, Nutone/Broan c905 doorbell transformer if you want the OEM part, available on Amazon. Do not use a different voltage, you unit either will not work if it a lower voltage or it will burn up your unit if it is a higher voltage. Do not use a DC transformer, you unit will not work on DC voltage.

Does this unit need a diode at the button?

if you use the 16 volt power supply for this unit, you don't need a diode

Is this compatible with a blink video doorbell?

Thank you for your question on model LA11WH. Unfortunately, we do not test our products with those of other manufacturers and we cannot guarantee compatibility.

La11wh | Desertcart UK

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Description

🔔 Ring in Style with Every Visitor!

⚡ RELIABLE POWER - Wired connection to a 16V transformer guarantees uninterrupted service—no batteries needed!
🎨 ELEGANT AESTHETIC - Classic white textured finish seamlessly blends with any home decor.
🔔 DISTINCTIVE ALERTS - Two unique chimes for front and rear doors ensure you never miss a visitor.
🌍 GLOBAL COMPATIBILITY - Designed for international standards, ensuring quality and reliability.
🔧 HASSLE FREE INSTALLATION - Easy to install, making it a perfect upgrade for your entryway.

The Broan-NuTone LA11WH Wired Doorbell combines a classic white design with two distinct chimes, ensuring you know exactly who’s at the door. With a reliable wired connection to a 16V transformer, you can say goodbye to battery worries and enjoy continuous service. Perfect for any home, this doorbell is both functional and stylish.

Specifications

Manufacturer	Broan
Part number	LA11WH
Item Weight	499 g
Product Dimensions	5.08 x 2.54 x 2.54 cm; 498.95 g
Item model number	LA11WH
Color	White
Style	Door Chime
Finish	White
Material	Steel
Power source type	AC
Voltage	16
Item Package Quantity	1
Number Of Pieces	1
light-source-type	LED
Included components	door chime
Batteries Included?	No
Batteries Required?	No

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