Subtronics India Pvt. Ltd. Manufactures External Siren with Plastic Box-Type Speaker. . Subtronics India Pvt. Ltd. Is an ISO 9001:2000 certified company. External Siren with Plastic Box-Type Speaker features an M.S. Box assembly. It has an operating voltage of 5/6 Volt D.C. This siren emits noise of 60 decibel only; however, higher loudness sirens are also available.
