Readings are given in four modes: Present displays existing wind conditions. Peak gives speed and direction of highest gust since last reset. Average reveals average wind speed and direction since last reset. Forecast compares most recent 12-minute average with previous 12 minutes.

Features user-selectable units of measurement for speed (MPH, Knots, km/h or m/s) and can interface with Mystic to compute wind-chill. Merlin's memory is protected by a 10-year backup to preserve stored data.

Ships complete with: 60' sensor cable, AC adaptor, outdoor sensors, 6.5" Solid Brass Dial and mounting hardware.