Camden Door Controls CM-400 Series mushroom push switches are medium-duty push-button controls. Buttons are available in red, blue, or green, with a 1 5/8” (40mm) diameter. The buttons are free-spinning, for protection against vandalism. They are supplied with an industrial-grade stainless steel faceplate in 1-gang or 2-gang widths. The switches are UL /CSA approved, rated 6A at 30VDC. Select models are UL294. Camden push switches are designed to control overhead doors, electric locks, electromagnetic locks, electric strikes and automatic doors. They may also be used for shunting, bypassing alarms, request to exit, timed functions, and many other applications. The switches are made for high-frequency usage in an indoor or outdoor environment. Easily visible, they are available with 1-gang or 2-gang stainless steel mounting plates.