How to determine which lens to use for the DS915.


  Standard Coverage using the lens provided:

  1. 30 ft. by 38 ft.

                                  Alternate lenses for optional Coverage:

  1. Barrier ( OLB91-3 ) 30 ft. by 4.8 ft.

  2. Long range (OLP91-3) 60 ft. by 9.5 ft.

  3. Pet (OLR91-3) 30 ft. by 38 ft.

  4. Dense wide angle (OLW91-3) 30 ft. by 50 ft.

  5. Dual Corridor (OLC91-3) 60 ft. barriers and 30 ft. by 30 ft. center coverage

   They are shipped in packages of three.