... , 250Hz, 125Hz1000Hz1 000Hz, 500Hz, 250Hz, 125HzStandard deviation for FrequencySmaller than ±1 %Distortion(THD)≤1 %Power Supplylithium recharge ... wind speed (optional), clock calendarNominal sound pressure level and frequency, environmental temperature, relative humidity, wind speed (optional), clock calendarData ... 4” adaptor, Hot-wire wind speed sensor, AH40 mini-printer AWA6223S/F & AWA6224S/F Sound ...