SM-89 is an add-on wireless panic button for SecurityMan Air-Alarm system. Its wireless transmitting distance is up to 450ft (in open area). It includes a 23A 12V alkaline battery which could last up to 2 years.
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Tuesday, July 21, 2009
SecurityMan SM89 Wireless Panic Button for AirAlarm Home Security System (Silver) Review
Posted by Sam at 5:20 PM
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