Mounting spigot of female 3/4" pipe thread type (for Ø27G male threaded tube). Large choice of fixings for post-top, side entry or catenary (see Columns section of the catalogue). Cable gland for Ø6mm to Ø13mm cable. Access from below to gear and optic system after quick release of the hinged glass enclosure via 'twist and lock' design. Automatic disconnection of the electrical mains when opening. Mounting plate with optics and control gear has hinge suspension and stays attached when released. Tool free connection to 2x2.5mm² terminal.