I have many of these DZMX1s. @LadySapphy is correct about what to do for 3 way and 4 way, and I’ve used them in that application also. They DO NOT provide instant notification of manual operation (there is a lag of a few to many seconds). However, the VRMX1-1LZ does (using a hail() command), and is otherwise identical (costs a bit more). All of these models, DZMX1, VRMX1 andVP00R come with white, ivory and almond face plates.