• Sorry, don't know. Once the unit was up and running, I discarded in instructions and spec sheet.
    Answered on 4/13/2016 10:05:46 AM by Oakland Newsguy from California
  • Sorry about that. According to the manual: Distance: Over 330 ft. (100meters) RF 915MHz (open air)
    Answered on 4/13/2016 11:57:53 AM by Product Specialist Greg from Sierra Trading Post