1/2 HP, chain drive wi-fi battery backup garage door opener. Smartphone control: Control, secure and monitor the garage with the myQ app- anytime, from anywhere. Includes 1 one button remote. Battery Backup: Open/close the garage door even when power is out. Drive Type: Long-lasting chain drive. Next generation garage technology: Improved Wi-Fi connectivity and enhanced memory to support new myQ features. Works with Amazon Key: Enables convenient and secure In-Garage Delivery. Set a recurring schedule to close your garage door or turn your lights on/off. Meets California SB-969. California only.