WM-1, WM-1D: Transmission Range May 31, 2021 01:19 Updated Follow The transmission range is 10 m (32 feet) line-of-sight.- May vary depending on the circumstances. Related articles WM-1: Is it possible to connect to a wireless MIDI adapter from another manufacturer? WM-1D: Are the connection settings automatically saved? WM-1, WM-1D: [MODE] switch (MODE indicator) blinks irregularly. WM-1, WM-1D: What kind of mobile devices does it support? Roland Warranty Information