Package Contents: You will receive a pack of 3 universal garage door remotes, an integrated user manual, a key fob, and an integrated 3V CR2032 button cell battery. It is compatible with garage door openers from the brands [brand 1], [brand 2], and [brand 3] manufactured between 1993 and [year]. It includes smart learning buttons in purple, red, orange, yellow, and green. Multi-channel use: Compatible with up to 4 garage door openers and accessories using Security+ 315MHz and 390MHz, Billion Code 390MHz, and Security+ 2.0 310/315/390MHz with high-level encrypted rolling code. Long-range MyQ frequency. Compatibility List: Green 81LM learning buttons (Billion Code, 390MHz), models: 1245, 1255, 1270, 1280; Red and orange learning buttons 971LM (Security+, 390MHz), models: 1245R/1255R, 1265R. Purple learning button 371LM (Security+, 315 MHz), models: 1345/1355, 1356, 3220, 3240, 3265, 3270, 3280, 3800, 3500, 35550, 35891LM. Yellow learning button 310, 315 and 390 MHz, models: 8065, 8155, 8165, 8355, 8360, 8365-267, 8500, 8550, 8557, 8587. Safe and compatible with Security+ 2.0 and rollable. High-security encryption technology protects you from external intrusions and provides peace of mind; long range and stable operation. Anti-slip design prevents damage from accidental pressure in your pocket or bag; built-in LED and low battery indicator; small and lightweight keychain for easy carrying; the latest RF technology ensures greater range; rolling code encryption. Color: As shown. Material: Plastic. Package Contents: 3 Universal Garage Door Remotes. The above package contents are the only items included; other products are not included. Note: Due to light reflection and different displays, the color of the item in the picture may vary slightly from the real thing. The measurement allowed error margin is +/- 1-3 cm.