The WMI (09) effortlessly allows wireless communication between a Meter and a wireless User Interface Unit wUIU(09) Keypad. Features Enables a previously hard-wired meter to communicate wirelessly Range extends from 35m (built environment) to 100m (line of sight) Quick and easy to install Available in galvanic isolation and current loop versions Maximum effective radiated power (ERP) of 10mW Operates on an open (ISM) band.