Spec Sheet Preview: The Nexa G2+ / GB2 series Alum. Speaker/Mic. modules are designed to be used with the Alpha Communications® / Golmar™ G2+ / GB2 modular series door entry stations. There are three (3) configurations available from zero to two (2) push buttons per module, in addition to the speaker/microphone/camera window. All Nexa G2+ / GB2 series Alum. Speaker/Mic. modules with pushbuttons feature Metal Pushbuttons, Nameholders and back-lit LED illumination. All Nexa G2+ / GB2 series Alum. Speaker/Mic. modules are made to snap into the N6001/AL, N6002/AL and N6003/AL modular panel frame(s).