Idec ld6a base module for led signalight towers idec ld6a 0wzqw the idec ld6a 0wzqw 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 wall mounting and compliments the led modulesthe modules oval shape presents a stylish image on all equipment this module is supplied with a steadyflashing light alarm two different alarm signals can be selected whose volume can be set by means of a slide regulator