High-speed motors can produce a continuous alarm sound that can expand over a long distance and up to 150 dB.
Specification:
Condition: 100% brand new
Element type: alarm horn
Model: MS-490
Alarm volume: 150 dB
Shell colour: Red
Optional voltage: 110 V, 220-240 V
Case material: Aluminium and steel
Insulation resistance: 100 MΩ (at 500 VDC)
Tension strength: 500 VAC, 50/60 Hz in 1 minute