Features: 1. Compatibility: Universal garage door remote for 5 colors Learn button. Compatible for 1993-current Sears Craftsman, , Chamberlain brand openers with Purple, Yellow, Red/Orange, Green smart/learn button. CAN'T support Dip Switch ones. 2. Replacement for remotes models: 371LM, 372LM, 373LM, 374LM, 950CD, 953D, 139.53753, 41A6127-1, HBW2028, 971LM, 973LM, 974LM, 139.53681, 139.53680, 891LM, 893LM, 890MAX, 893MAX etc 3. Multichannel: allows control of up to 3 garage door openers that features Security+ 315MHz & 390MHz as well as Security+ 2.0 310/315/390MHz at once. 4. Safe & reliable: Security+ 2.0 and Rolling code technology, the highest level of encryption, prevents hacking and provides peace of mind. Long range and stable work. 5. What you get: (1 Pack) remote, easy-to-follow programming instruction, keychain, and CR2032 lithium battery included for your convenience. Specification: Material: ABS_x000D_ Size: 6.43.51.5cm_x000D_ Color: ABCD button_x000D_ Weight: about 33 grams_x000D_ Working voltage: DC3V (built-in 2032 battery)_x000D_ Working current: 6mA_x000D_ Radiated power: 6mw_x000D_ Transmission frequency: 433MHZ_x000D_ Transmission distance: 50-100M (open space, receiver sensitivity is negative 100dbm)_x000D_ Encoder type: Fixed code. Learning code. Partial rolling code_x000D_ Function: copy remote control / test remote control / copy remote control_x000D_ Application: The remote control is widely used, mainly used for remote control of electric retractable doors, elevators, remote control of road gates, remote control of rolling shutter doors, garage doors, sliding doors, remote control of LED lights, remote control of fireworks igniters, remote control of bus doors, burglar alarms, Electric door alarm, MP3 motorcycle anti-theft alarm, etc. PackageList: 1*Remote 1*Keychain 1*Instruction Note: Due to the lighting effects and shooting angles, there is a color difference in the product, please understand._x000D_ Due to manual measurement, there is a tolerance in the product size.