Brand New Ultrasonic Wind Speed Sensor (S-WCG-M003) Not Working

If you connect the battery to your brand new Ultrasonic Wind Speed Sensor (S-WCG-M003) and it does not appear to be working, just bring the sensor outside in the daylight for a bit. In order for the sensor to become activated it must be placed under a light source for at least one minute.  

 

Brand 
Onset
Associated Products 
Measurement and accuracy