Idec ld6a base module for led signalight towers idec ld6a 0pqw the idec ld6a 0pqw is a base module for use with the signalight towers from the ld6a series this base module was specifically created with a modern design for pole tube mounting and compliments the led modulesthe modules oval shape presents a stylish image on all equipment this module is supplied with a steady lightsupplied with silver screws and washers4x m5 screw4x m5 spring washer 4x m5 plain washer 4x m5 nut 4x o ring