• Compatible with S449 QZ1, S449 QZ2, TXQ449100 and TXQ449200 models. • Operating frequency of 433,92 MHz ideal for garage doors. • Includes 2 remote controls with 2 buttons to control up to 2 independent openers. • Rolling code replacement system to provide a higher level of security. • Transmission distance of between 10 and 50 meters in open spaces. • Made of high-quality plastic, durable and with comfortable-touch buttons. • Compact and lightweight design, easy to carry on a keychain, bag or backpack. • The product includes batteries and instruction manual for quick pairing.