<!-- from fixya rte -->Setting the codes for the door chime - Desa International White Wireless Plug In Door Chime

I like to set permently on my carltonrc4120r door chime. i dont see any jumpers, chime gets changed by depresing button under the door bell button.

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!