2211-L Garage Door Opener Remote for Guardian 303MHz Dual Frequency Burst Garage Door Opener with Security Rolling Code Support. It is ideal for multi-vehicle homes or as a replacement for lost or damaged remote Compatible with for Guardian 2211-L 2211-L(TX) Garage Door Opener Remote 2-button keychain remote controls up to two garage door openers. The remote is designed to minimize power consumption to long battery life. ENHANCED SECURITY - Replacement Garage Door Remote Transmitter utilizes the latest 303mhz rolling code technology Ensures a range of up to approximately 120 feet, minimizing radio wave interference and increasing security. Before starting remote programming, make sure the garage door opener is fully closed Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Black Material:Plastic Package Contents: 3x Garage Door Remote(With 1x 23A 12V dry battery) Only the above package content, other