Chamberlain LiftMaster CSW24VDC Swing Gate Opener The Chamberlain Liftmaster CSW24VDC is a heavy traffic gate opener that has been engineered for than more than a million cycles in high traffic and heavy duty operations. The Liftmaster CSW24VDC comes with MyQ technology. This allows you to monitor and control your gate from anywhere. It also includes a battery backup system that will work for up to 146 cyces or 24 days. Addionally, security 2.0 is included on this system.