Manufacturer: Nunotani Nautical Instruments Mfg Co., Ltd
Model: 21ELSCD

The propeller in the transmitter is rotated by the wind, and the generator inside generates power. Wind velocity is measured through utilizing the proportion between the power output and the rotation and the wind velocity. The angle of wind direction is communicated to the self-synchronizing machine inside, and directions are sent through remote transmission utilizing its synchronicity.

Receiver with a signal converter inside 21ELSCD

EL: With illumination
E: Without illumination
SCD: With signal converter (format IEC61162-1)