[Product Information]

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• Add-on to any 100-200 watt warning siren & Improves emergency vehicle operator safety and siren effectiveness.
• Produces penetrating/vibrating low frequency sound waves able to penetrate vehicles， alerting drivers to your oncoming emergency vehicle.
• Works with any 100/200 watt emergency vehicle siren & Works with any sweeping tone， plus Hi/Low and electronic mechanical tone generated by the primary siren.
• Low Frequency siren sound can be activated via any emergency vehicle steering wheel horn ring.
• Highly effective in dense urban environments with heavy vehicle traffic - 8 second safety timer provides automatic tone shutdown.