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  • Volume of bell: 90db
  • Switch is not included; A good replacement for the old and broken one.
  • External wired bell for security access control connect to 12VDC power directly.
  • External wired bell for access control system; Need to work with the access control system built-in bell function.
  • The people from the outside press the doorbell button on the access control unit, this bell will sound "Ding-Dong" tone and notify those inside that there is someone wanting to come in.
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