Specifications Product Dimensions: 3.15 x 1.77 x 0.63 inches Button: 3 buttons Color: Black Power Source: CR2032 Battery Usage: Garage Door Opener Remote Control Scope of Application: Garage Door, Gate, Alarm, Automatic Door, Rolling Door, etc. Distance 20-50m (Open Space) Number of Button Presses Door Opener Type or Learning Button Color Security+2.0, MyQ, Assure Link Yellow Learning Button Security+ 315MHz Purple Learning Button Security+ 390MHz Red/Orange Learning Button Billion Code 390 MHz Green Learn Button Compatible Model PURPLE Learn Button Models Access Master 371AC, 372AC, 373AC Chamberlain 950D, 950CD, 953D, 953CD, 956D, 956CD, 963D Craftsman 139.53752, 139.53753, 18190, 18191 DoIt 950DI, 953DI, 956DI Gatheron GT-3-315 LiftMaster 370LM, 371LM, 372LM, 373LM, 373W, 373P, 374LM, 370LMC, 371LMC, 372LMC, 373LMC, 374LMC Raynor 370RGD, 371RGD, 372RGD, 373RGD, 374RGD RED/ORANGE Learn Button Models Access Master 971AC, 972AC, 973AC, 974AC Chamberlain 950CB, 953CB, 956CB Artisan