Single-gang, replaces LM1, programming (including macros) can be done with the PM110 or the new Dragon Drop-IR, individually addressable, features a relay speaker mute, dual layer push & hold on all buttons, 20kv microprocessor protection with read/write switch, gives the installer the ability to insert a unique IR code into a hand-held remote allowing it to cause the keypads to track the handheld’s bank selections, has the ability to mute individual rooms by pushing a button, gives the installer dual layers on every button for true "push and hold".