2gig GDR1 Universal Garage Door Receiver Type: Universal Garage Door Receiver Features: Universal Garage Door Receiver Designed to be used with 4-Button Key Ring Remote Control any garage door operator with 4-Button Key Ring For use with up to 10 4-Button Key Ring Remotes (2GIG-KEY2-345) Simple design plugs directly into standard 110 VAC outlet Easy to install using two conductors directly connected to the garage door operator or existing wall-mounted push button 4-Button Key Ring Remote transmitter codes persist in memory during loss of power. Protocol: Z-Wave Type: Smart Garage