From now on, infrared photo beams belonging to OPTEX SL series, all with four beams, can be used with our towers for residential market oriented solutions and applications where aesthetics should be taken into account as much as security itself.Bunker Seguridad, in continuous search of perimeter solutions which would satisfy any of the client’s requirements has included in its catalogue a new accessory, MASL, which allows using photo beams with four beams inside the residential towers MALTA and CAV.