ANSI Standard Heavy Duty Electric Strike Lock Fail Secure or Fail Safe Mode Adjustable for Access Control used Two-way audio: Built-in microphone and

Two-way audio: Built-in microphone and rear speaker for clear two-way communication from your phone or NVR

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ANSI Standard Heavy Duty Electric Strike Lock Fail Secure or Fail Safe Mode Adjustable for Access Control used Two-way audio: Built-in microphone andGood Condition, Used, Has Accessories. Fail Safe or Fail Secure Mode Adjustable Holding Force: 1000kg 2204lb Designed for Metal Frame: drill a hole, then install it directly Strike lock needs to work with mechanical lock or knob lock which you need to buy separately