When the button is in the MosquitoI position, it emits sound like a mosquito wing at a low frequency that repels the female mosquitoes.
When the button is in the MosquitoII position, it emits sound like a mosquito wing at a high frequency that repels all the mosquitoes.
Voltage: 220V ~ 240V 50 / 60Hz
Frequency of simulation Dragonfly: 38.4Hz
Frequency of simulation male mosquitoes: 15k ~ 20kHz, 18.4kHz
Dragonfly simulation intensity:> 60dB, <80dB
Simulation intensity male mosquitoes:> 95dB