SELF-POWERED WIRELESS WIND SPEED SENSORS Etesian technologies manufactures the worlds only self-powered wireless anemometer systems. By virtue of a small self contained generator our wireless anemometer sensor will NEVER require a battery change or replacement as there are NO BATTERIES to replace. ETESIAN TAKES YOU TO THE NEXT LEVEL OF SIMPLICITY - NO CABLES TO RUN AND CONNECT AND NO DEAD BATTERIES TO REPLACE - EVER. Discuss your specific requirements with our applications engineers to determine the most suitable configuration for your particular application. What our customers are saying... It worked flawlessly... just kept delivering the data... never a problem." Ken Craig, Senior Engineer, Bergey Wind Power "(Etesian's is)...the most reliable wind sensor in its class... Phil Atkinson