2211-L Garage Door Opener Remote for Guardian 303MHz/390MHz 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 Guardian 2211-L 2211-L(TX) GDOR2B 2211 21230 21230-L 303RTX R2BCC BOL4 Garage Door Opener Remote Compatible with Guardian 628, 315, 415, 600, 600SL door opener models 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 for Guardian Garage Door Remote Transmitter utilizes the latest 303mhz/390mhz rolling code technology Ensures a range of up to approximately 120 feet, minimizing radio wave interference and increasing security. A new security code is generated each time the remote is used, effectively warding off potential intruders. Check your garage door opener before purchasing ! Replacement Garage Door Opener Remote for Guardian 303MHz,303MHz/390MHz Dual Frequency All Openers only! 2 buttons are 4 million Ensures a range of use up to approximately 100 feet, minimizing radio wave interference and increasing . A new security code is generated each time the remote is used, providing protection against potential intruders. Compatible with for Guardian Garage Door Opener Remote: 2211-L 2211-L(TX) 2211 21230 GDOR2B 21230-L 303RTX R2BCC BOL4 BOL4, BOL6, BOL9, OL4, OL6, OL9, BRD1, BRD9 Compatible with Guardian door opener models: 628, 315, 415, 600, 600SL How to Program the Two Button Garage Door Remote: Press the Learn button until the LED turns on. Press desired remote button. There will be two flashes of light and two beeps. The remote is now coded. Colour:As Shown Material:plastic Package Contents: 1 set x Garage Door Opener Remote Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.