ELECTROMAGNETISM ANNUNCIATOR MODEL ET-1 DC RESISTANCE       19；25；74；100（Ω）           AC IMPEDANCE AT 1KHZ  150;75;350;600（Ω） SOUND LEVEL ≥100(dBA) WEIGHT 30(g) MODEL ET-2 DC RESISTANCE 19;25;74;100（Ω） AC IMPEDANCE AT 1KHZ 150;75;350;600（Ω） SOUND LEVEL ≥100(dBA) WEIGHT 20(g) PIEZOELECTRICITY ANNUNCIATOR  　 MODEL YB-1 OPERATING VOLTAGE 12（V） CURRENT ≤300(MA)　 FREQUENCY RESPONSE 2600±200(HZ) WORKING DURATION  PULSE SOUND LEVEL 110（1M dBA) TEMPERATURE -20-80℃ WEIGHT 85(g) ELECTROMOTION ANNUNCIATOR MODEL DB-1 IMPEDANCE 8（Ω）　 FREQUENCY RESPONSE 2600±200(HZ) WORKING DURATION  PULSE SOUND LEVEL 110（1M dBA) TEMPERATURE　 -20-80℃ WEIGHT 185(g) |Inquiry|Show All Products|Next|

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