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PROWLER was a mid-1980s experimental robot mobile sentry gun device.[1] The name was an acronym standing for "Programmable Robot Observer With Logical Enemy Response".

The Logical Enemy Response was twin M60 machine guns, and a grenade launcher. PROWLER was "the first outdoor robotic sentry/surveillance system."[2]

PROWLER was a six-wheeled vehicle with a gun turret and sensor array, resembling a miniature tank, developed from 1983 onwards. The robot was built by Robot Defence Systems (RDS), a company from Thornton, Colorado, which has since gone out of business.[2]


  1. ^ Everett, Commander H.R. "A Brief History of Robotics in Physical Security". Space and Naval Warfare Systems Center. 
  2. ^ a b Krishnan, Armin (2009). Killer robots : legality and ethicality of autonomous weapons (Repr. ed.). Farnham, England: Ashgate. ISBN 978-0-7546-7726-0. Retrieved 24 January 2012.