100% compatible with Chambers, Liftmaster, and Motorlift remote controls: 84330e, 84335e/EML, 94333e/EML, 94334e, 94335e/EML, 9747e, wickes156105, 1a5639-. A5477, etc. (see complete list below) 100% compatible with Merlin+remote control: C840, C940, C943, C945, CM842, CM844, CM128. MERLIN+door opener: Merlin HE60, MGA600, MGL300, MGL400, MGS500, MGS500T, MGS000, Merlin MGS 1000T, MJ3800, MJ3800R, ML500, ML700, etc. (see complete list below) Supports 3 garage doors+green LED lights - this garage door remote control is an aftermarket remote control, not an original accessory. It can control up to 3 garage door openers or door+scrolling code technology to protect your home access and connectivity. Durable and well crafted mini remote control with simple materials - it is very small and can be easily placed on keychains, bags, and backpacks, making it easy to carry with a metal keychain when going out.