DC 12V

Video Description:
Watch as we walk through the full process, from initial setup to real-world testing. In this video, you'll see a detailed demonstration of the elevator five-way intercom alarm bell system, including how it triggers a loud 85dB buzzer when the emergency button is pressed. Learn about its compatibility with NKT/NBT intercom systems, installation steps, and real-world emergency response scenarios for passenger safety.
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