Telguard GDC1 - Universal Z-Wave Garage Door Control Switch Is compatible with any Z-Wave controller supporting the binary switch command class. (Check with your controller dealer ) Meets UL 325 safety guidelines for unattended operation:Provides five seconds of audible and visual warnings prior to remote movement. Has the ability to cancel movement locally during the warning period. Suspends unattended operation after two consecutive failed closed attempts. The GDC1 is based off one of the fundamental command classes in Z-Wave home automation, the binary switch (i.e. light switch). This means that the GDC1 will seamlessly integrate with nearly any Z-Wave based system ever sold that supports light switches. Turn the GDC1