The Sycomoreen's OPALE plants are equipped with ultrasonic repelling devices 2 x 130 dB in order to protect the electric wire from the attacks of rodents and other pest animals. <br /><br />In order to strongly reject the pest animals, these devices are modulating the waves inside a range of frequencies which are pulsed and variable ; moreover the devices are supplied with an intermittent and cyclic manner : stop during about 8 minutes and continuous restart of about 8 minutes. Thus, the rodents are top stressed without acquiring a familiarization with the ultrasonic emissions. The power of each device is 2W and its annual consumption is about 9 kWh (less than 1€ in France). <br /><br />More information on http://sycomoreen.free.fr
