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Can the OSI Alarm System support more than 1 Siren?

 You can definitely add multiple sirens as you need. We suggest our OSI-ALM-SIR-W wireless siren which is available here:

  • OSI Go Direct: https://www.osigodirect.com/wireless-indoor-alarm-siren/
  • Amazon.ca: https://www.amazon.ca/dp/B08RWDR55C
  • Amazon.com: https://www.amazon.com/dp/B08RVSYL3F