Τετραπλή οπτική δέσμη 250 μέτρων.
Ales Quad is a double range barrier with active infrared with 4 lenses with compact dimensions. Pre-wired and ready for installation, it is composed of a transmitter unit and a receiver. It is positioned in each corner and can be installed on poles or on walls. Resistant, compact and easy to install, it is the only barrier of its kind to have a 250 meter range.