PARAMETER PMS-85H3-01 PMS-85H3-03 PMS-85H3-05 UNIT RESONANT FREQUENCY 2700 2700 2700 HZ OPERATING VOLTAGE 1-2 2-4 4-6 V RATED VOLTAGE 1.5 3 5 V MIN SOUND OUTPUT AT 10MM Min85 Min90 Min90 dB COIL RESISTANCE 5.5? 15? 30? Ω RATED CURRENT ≤80 ≤80 ≤80 mA OPERATING TEMPERATU -40～+85 -40～+85 -40～+85 ℃ STORAGE TEMPERATURE -40～+85 -40～+85 -40～+85 ℃ WEIGHT GRAM HOUSING MATERIAL LCP LCP LCP