How do I change the chimes on an Arlec Wireless Door Chime DC686 ?

https://www.manualslib.com/ Try this manual site. You might find one.

http://www.arlec.com.au/wp-content/files/DC162.pdf

http://www.arlec.com.au/wp-content/files/DC687.pdf

Presuming that you are asking how to set codes for the Desa International door chime, here's a solution:

There are two components of the Desa door chime --- the ringer assembly and the door button. Inside each component is a set of eight pairs of pins and several square-ish plastic jumpers. To set a code, you must push jumpers onto the pair of pins for each of three different numbers. (You may find that you have more than three jumpers. If so, the others are spares which you can tell because they will only be covering one of the two pins in a pair.) Whatever three numbers you choose, the ringer and button must match exactly. 5-6-7 seems to be the default set-up as delivered from the factory. This is only a problem if anyone else in the neighborhood also has a Desa chime with this setting. If you use pin 8, the ring changes from a two-tone chime to a 16-note sequence.

Good luck!

The webpage http://www.dimango.com/dc-cd-quality-doorbells.htm

shows:

Wireless Doorbell CD Quality Door Chime Model RC4300

No longer do you need a wired door chime or traditional doorbell with brass tubing to get amazing, rich sound. Our Battery Operated Door Chime from Dimango has CD quality sound while remaining completely wireless...

• Plays three selectable sounds
  
  
  
  
  
  1. Ding Dong
  
  
  
  2. Dong
  
  
  
  3. Westminster Chime Click To Hear Sound!
  
  
  
  



• Set sound conveniently at button

It seems that there is a button on the receiver/speaker. Try press once and see if the sound changes.

Taking the battery out and putting in back in will reset to a simple DingDong chime. It should be possible to put the doorbell in a mode that allows buttoning through each of the tunes.

The 515N number is a transformer part number, do you have a photo of the chime you have? Is it wired or wireless? Is it a newer chime or and older model? Check Nutone's website to see what model you have, then search their site for the model you have. The model page will have an instruction sheet PDF file download of the instructions.

Change pin configuration on plugin bell and the remote.
The pin configuration should match

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

According to my manual.

>Turn Chime Doors on:
1. System must be disarmed. Press Chime Doors button.
panel will announce,"Chimes On". Chime Doors button will be lit.

> Turn Chime Doors off:
1. Press Chime Doors button.
panel will announce, "Chime off". Chime Doors button no longer lit.