1. A surveillance device comprising: a support having a top circular plate, a bottom circular plate and an intermediate circular plate, the top and bottom circular plates being axially spaced apart along a central column, the intermediate circular plate being disposed intermediate the top and bottom circular plates, the support further comprising a first cylindrical wall extending between the top cylindrical plate and the intermediate cylindrical plate, a second cylindrical wall extending downwardly from the intermediate circular plate and a third cylindrical wall extending upwardly from the bottom circular plate, the second cylindrical wall and the third cylindrical wall defining a slot of constant width therebetween, the support being constructed and arranged to be secured to a structure, a first image collection device secured to the first cylindrical wall, a second image collection device and a servo motor, the second image collection device being mounted below the first image collection device and being movable to and fro in the slot by the servo motor, the second image collection device having an optical axis whereby the servo motor is constructed and arranged to regulate the direction of the optical axis of the second image collection device; wherein the first cylindrical wall comprises a plurality of mounting sockets for the first image collection device, the plurality of mounting sockets being disposed regularly and circumferentially around the first cylindrical wall, the first image collection device being thereby fixedly secured to the support.