【Wide Compatibility】Compatible with LiftMaster 893MAX and various models across different frequencies (315-390MHz). 【Long-Range Control】Offers an impressive transmission distance of up to 100 meters in open areas, ensuring reliable operation from a distance. 【Secure Rolling Code Technology】Utilizes rolling code technology for enhanced security, preventing unauthorized access to your garage or gate. 【Versatile Application】Ideal for controlling electric doors, windows, garage doors, roller shutters, sliding gates, barrier gates, and more. 【Durable Construction】Features a robust Metal and ABS shell, designed to withstand frequent use and environmental factors. 【Easy Operation】Functions similarly to the original remote, requiring pairing with the main unit for seamless integration into your existing system. Specifications: Operating Voltage: 3V Working Current: ≤12mA Transmission Range: 100 meters (open area) Frequency: 315-390MHz Code Type: Rolling Code Number of Buttons: 3 Battery: Built-in CR2032 Shell Material: Metal and ABS Compatible with: 81LM Green Learning Button (Billion Code, 390MHz): Models: 1245, 1255, 1270, 1280 971LM Red/Orange Learning Button (Security+, 390MHz): Models: 1245R/1255R, 1265R, 2220, 2245/2255, 2265, 2280, 2500, 2575, 2585, 2595 371LM Purple Learning Button (Security+, 315MHz): Models: 1345/1355, 1356, 3220, 3240, 3265, 3270, 3280, 3800, 3500, 3850, 3585, 3595 891LM Yellow Learning Button (310, 315, and 390MHz): Models: 8065, 8155, 8165, 8355, 8360, 8365-267, 8500, 8550, 8557, 8587