My doorbell also ring neighbor's bell

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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The doorbell and the car wireless are on the same frequency, post doorbell model number, I will see if the doorbel frequency can be changed.

It is a guess, but wireless doorbells have adjustable frequencies so that your neighbors door bell button doesn't ring yours as well. My guess is that the bell push and the chime unit are mis-matched. Do you have a manual? I can't find one.

https://www.google.com/search?q=desa+doorbell+model+wa220-uk+pairing+mode

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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 ...

They're all set to seeing frequency you need to go into your owners manual and check how to change wireless frequency

Heath-Zenith (I beleive they bought DESA) makes a battery remote push button bell that says its compatible with all Heath Zenith chimes. I bought one at Home Depot and it worked for my SL-6195-RX. (an on line doorbell seller and the Home Depot assoc all said it wouldn't work.)
UPC is 16963961975.
Item also shows a code "11G43" on a sticker on the back of the package.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/steven_7f54ab9063554f66

I just solved a similar problem with mine. I found a PDF of the instructions for changing the frequency and the tone: http://heath-zenith.hcents.com/data/manuals/598-1034-02.pdf

http://heath-zenith.hcents.com/data/manuals/598-1034-02.pdf

Yes, there is a way to change the security code. See FAQ here:
http://www.heath-zenith.com/servsup_disp_faq.cgi?cat=5

click on "how can I change the security code."

in the chime box and remote you can change the setting for the remote signal that is picked up( refer to your manual for the correct settings) these will be a set of pin connections in the chime box and in the remote switch that will have to be set to another selection