... Absorb the advantages of both domestic and foreign low frequency and intermediate frequency .3: According to different disorders with various specific waveform ... ≤80VA 4, Continuous working time ≥4hr 5, Output current 0~90mA 6, Frequency of operation 500Hz,2000Hz,3000Hz,4000Hz,5000Hz ... adjustable 12, Treatment temperature 0~8 adjustable 13, ambient temperature 5°C~40 °C 14, ambient humidity ≤ 80% 15, ...