Universal Remote garage door opener

I'm selling a new Universal Remote Garage Door Opener, model SM24-LM, with a working voltage of 2.4V-3.3V and frequency of 310Mhz/315Mhz/390Mhz. It is compatible with Liftmaster commercial operators and receivers that are Security + 2.0 capable. Specifications: * Manufacturer Model: SM24-LM * Working Voltage: 2.4V-3.3V * Frequency: 310Mhz/315Mhz/390Mhz * Compatible with: Liftmaster commercial operators and receivers that are Security + 2.0 capable