Product Specification Sheet APS941

Rev. 11/2017

MM-GB2 Video Memory Module for GB2 System

Architects' And Engineers' Specifications

The GB2 series video memory module(s) shall be Alpha Communications® / Golmar MM-GB2, or approved equal. The MM-GB2 shall be used to record up to 10 seconds of video from visitors on a GB2 series system.

Contractor shall observe all local and national electrical and building codes.

MM-GB2 Video Memory Module for GB2 System

The Alpha Communications® / Golmar MM-GB2 Video Memory Module is used exclusively with the GB2 series systems. The MM-GB2 records 10 seconds of video from the door panel's incoming call. It allows recording from the panel's camera which is in communication.

In a GB2 system, you only need a single MM-GB2 for all users, thus reducing the overall system cost. Each user will be able to check their own records only. The MM-GB2 has a video composite output together with a trigger signal and dry contact relay which can be activated from the monitor during a preset time.

  • Only one (1) module required per GB2 system for all users
  • Records 10 seconds of visitor video
  • Has composite video output and  trigger/relay
  • Uses simple 2-conductor non-polarized (loop) wiring
  • Can connect up to two (2) of the CAM-GB2 external cameras
Dimensions: 2.84"W (73mm) x 3.95"H (101mm) x 2.37"D (61mm). 
GB2 Wiring Information
The GB2's system uses simple 2-conductor non-polarized wiring making it ideal for new installations as well as for retrofit applications. All audio, video and data functions are fully digital and using the RAP-2150 (or equivalent) cable you can run up to 300 meters from the entrance panel to the furthest monitor.
Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
TOLL-FREE: (800) 666-4800 • Web: • Email:
Copyright© 1998-2019 Alpha Communications® - All Rights Reserved.
Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.