Previous page Next page The green LED light Touch the on/off sign to switch the device on. The green LED at the front of the unit will light up for 3 seconds and subsequently every 5 seconds. " data-position="triggerHorizontal"> Frequency in the range from 22,000 Hz to 30,000 Hz The repellent device emits continuous ultrasonic waves with frequencies ranging from 22,000 Hz to 30,000 Hzabove the human hearing threshold. " data-position="triggerHorizontal"> 8 batteries will last 6-7 weeks After changing the batteries, wait 60 seconds before switching the device back on.
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