Wind speed and direction with solar powered 900mhz transmitter No cables makes it easier than ever to bring the weather story into your home. This wireless version of our popular Merlin instrument operates at a powerful 900mhz which allows for up to 300' transmission distance between sensor and read-out, in typical residential installations. When wind conditions change, Merlin receives updates every 2 seconds. The wireless rooftop transmitter operates on solar power and has a built-in rechargeable NiCad battery backup for up to 7 days of operation without sunlight. This digital instrument with a "brain" records changes and trends as well as present wind conditions. 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 the most recent 12-minute average with the previous 12-minutes. Features user-selectable units of measurement for speed (MPH, Knots, km/h or m/s). Can interface with Wireless Mystic to compute wind-chill. Stored data is protected by an internal 10-year backup system. Ships complete with solar powered 900mhz rooftop transmitter, NiCad batteries, AC adapter (for indicator), sensors and mounting hardware. A single 900mhz Wireless Receiver (sold separately) is required to operate this system.
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