LiftMaster 891LM single-button remote control is a multi-function remote used to control single garage door openers and gate operators. This garage door remote gives you a simple way to open and shut your garage door wirelessly and automatically. It's easy to code because there is only one button to choose from, making it user-friendly and easy to use. It features Security+ 2.0 rolling code technology that significantly reduces radio wave interference and makes it virtually impossible for anyone to steal your remote control signal. LiftMaster 891LM remote comes equipped with a visor clip that attaches to your vehicle's visor for easy access. The Security+ System safeguards your household by ensuring that every click sends a secure code to your garage door opener. It operates and comes equipped with a 3V lithium battery already inside. The battery life for this remote is an average of 5 years due to its low 3V voltage. This single-button remote is only compatible with newer Security+ 2.0 LiftMaster garage door openers or gate openers with a yellow round learn button and yellow antenna.