Add-on Wireless Doorbell (for Air-Alarm II)

**Fully compatible with Air-AlarmII/IIB, not Air-Alarm1 or Air-Alarm-DL
( Sold through our authorized reseller Do not click here for any promotion or clearance sale items )

Key Specifications:

  • Operating Power: Internal Rechargeable Li-battery (3.7v/200mAh)
  • Wireless Transmitting distance: up to 300ft (in open area)
  • Service life: up to 3 years

Product Contents

  • 1 x SM-82
  • 1 x Manual

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