The GM3T is a 3-button garage door opener remote compatible with all Genie garage door openers from 1993 to present. It replaces GT912, GT90, GT90-1, GPT90, MAT90, ACSCTG Type 1/2/3, B8QACT, B8QAGT, GICT390, GIFT390, GICTD, GIFTD, G3TR, G3T-R, and G3T-BX models. This remote works with all Genie gated community receivers, 9-switch and 12-switch units, and is compatible with Intellicode 1 and Intellicode 2 systems. It supports ACSGT, ACSCTG Type 1, ACSGT Type 1, TBSTG Type 1, and Series II Electronics (B8QACSC). Features include auto-seek dual frequency operation at 315/390 MHz, large easy-to-find buttons, LED indicators, and user-definable button functionality. Programming is simple across all modes. The remote easily mounts to a car visor. Specifications: Model GM3T-BX, Part number 37344R. Dimensions are 3-3/8" L x 1-15/16" W x 1/2" D. Uses CR2032 coin cell battery. Visor clip and instructions included.