... 2,Material : STEEL & ABS 3,Dielectric strength : 500VAC, 50/60Hz in 1 minute FW-MS290 motor siren(mini motor siren,alarm ... siren) is with horn and alarm sound in the fast speed.We have make mini motor siren MS190, MS290, we ... resistance : 100MΩ(at 500 VDC)Dielectric strength : 500VAC, 50/60Hz in 1 minuteVoltage: DC12V DC24V AC110V AC220VMoter Siren with the external ...