UZ16-3 buzzer(electric buzzer, magnetic buzzer) used for electrical equipment, machinery equipment,and medical equipment buzzer(electric buzzer, magnetic buzzer)Rating Voltage :6V,12V,24V AC/DCRating Current:20mA~70mAFrequency:2.3±0.5KHLife:1000HInsulation Resistance:≥1000MΩDielectric Strength:1000VSound output at 1m(dB):75Ambient Temperature:-10oC~+55oC. electric magnetic buzzer 220v