I want 2 doorbells that i can activate with one button

https://www.homedepot.com/p/questions/Heath-Zenith-Wireless-Battery-Operated-Doorbell-Push-Button-Black-and-Satin-Nickel-SL-7303-02/100626792/2

I found this in the Questions

Q:Hello, I need a wireless doorbell button replacement for the Doorbell model: "desa sl-6180-rx-a". Please, help. Thanks byTim'May 31, 2020

1 Answer A: Hi Tim, Any of our Heath Zenith or Hampton Bay branded buttons will work with that model. You will need to put it in backwards compatible mode. Please contact our technical service team and we'd be happy to help.
byHeathCo'Jun 2, 2020

Also sold by Heath Zenith and where there Product Support is.

https://heath-zenith.com/products/wireless-push-button-sl-7797

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If your Honeywell plug-in doorbell won't stop ringing, there are a few things you can try to troubleshoot the issue:
1. Check the batteries: If your doorbell has batteries, make sure they are properly installed and have enough power. Replace them with new ones if needed.
2. Check the ring options: Press the ring option button with the music sign and cycle through the different ring options until you find one that stops the ringing.
3. Reset the doorbell: To reset the doorbell, unplug it from the wall outlet and wait for a few minutes before plugging it back in. This will allow the doorbell to reset and may solve the issue.
4. Check the chime settings: If your doorbell has multiple chime options, make sure the one that's causing the issue is not selected. You can cycle through the chime options using the settings button.
5. Contact customer support: If none of the above steps work, contact Honeywell customer support for further assistance. They may be able to provide additional troubleshooting steps or offer a replacement if the doorbell is defective.

it is possible that the doorbell button is sticking down and keeping contact - so the doorbell keeps chiming.

Heath/Zenith SL-6166-C Wireless Plug-In Door Chime Kit ...

www.amazon.com > ... > Door Chimes & Bells > Kits
Amazon.com, Inc.Heath Zenith SL-6198-B Wireless Doorbell Replacement Battery. Total price: ... Plug-in doorbell chime, doorbell button/transmitter with battery, hardware pack ...

It seems your doorbell transmitter got wet and corroded the contacts.
These push buttons are not sealed at all and thus will let rain, snow etc. eventually corrode the electronics.
Solution: Find a new push button on eBay.


Cheers

need more info. Doorbells do not need 2 xfrms. The red off 24 volt xfmr foes to door switch and returns on white. If you have 2 door switch one switch to front door label on doorbell and the 2nd goes to back door label. What is the brand and model number/ I'll try and walk you thru it.

99% of the time, you need a new doorbell button
Also check if any circuit breakers are tripped
Check GFI breakers in baths and kitchen

Real-estate lady answer: buy a new doorbell button and connect 2 wires on back of new button.
Doorbells are low voltage and not dangerous.
If screws are loose in the holes, break off toothpicks in hole so screws have something to bite.
You need small screwdriver:


Repairman answer
Doorbell problems have 3 parts
1) The button
2) The chime or bell located in house
3) The 12V or 24V transformer located in attic or basement
4) rarely the wiring because it's low voltage and does not get hot

1) start at the button.
Remove button from wall
There are two LOW-voltage wires on back of button
Remove 1 wire and touch other wire, copper to copper
Does doorbell ring? Do you see a spark?
If bell rings, then button is bad

2) Chime or bell doesn't ring when button wires are crossed
Take cover off chime
The button works, so have helper push button while you're looking at chime
Can you hear any noise? Have helper push button on-and-off
Chimes have 2 or 3 wires >>> 2 wires if only front door has button, 3 wires if back door also has button
Take one wire loose and scratch it across each of the other wires
Remember front button is held down (or front button wires are twisted together)
Can you see a spark when wires are scratched together?
Try this with more than one wire ... but don't mix up location of each wire
If you are getting a spark, then chime is getting power, but it's not working
Replace chime

3) Transformer in attic or basement looks similar to this:

Use a wire and scratch across both screws to see if you get a spark
If you get a spark ... and the crossed wires dont ring the chime... and there is no spark at chime, then there is a bad wire
If no spark at transformer, then check circuit breaker
At last resort, but new transformer at Home depot in the doorbell section near light department

Reset both the units the door unit and the remote by cutting off supply for a while. Now it will move to the default settings. If the earlier process had hung the system then reset the codes given once again to allow the main control unit to lock on with the remote. follow as instructed till the remote locks.
If not contact the dealer as the main unit has some errors.

The doorbell buttons and your receiver must be on the same channel. If you will get out the directions that came with your unit, they will describe the process to go through to reset the specific "codes" for your buttons and receiver.

Batteries are located in the doorbell push button case in the back. Slide open a compartment to reveal the batteries.