Camden CM-4000 Series 1-5/8" Mushroom Pushbutton, Aluminum Faceplate

Both contact types are offered on the CM-4000, and the choice depends on what the button is wired to. N/O momentary is the usual pick for a request-to-exit input or to trigger an automatic operator, since the contact closes only while pressed. N/C momentary is what you want when the button has to break a circuit, such as interrupting power to a maglock for release. Pick the contact type along with the button color (red or green) when you order.

The CM-4000 faceplate measures 4-1/2 x 2-3/4 x 1-3/4 inches, which is the single gang footprint, so it mounts to a standard single gang box or mud ring. Camden also builds the CM-4000 series on narrow width plates if you're mounting to a door frame or mullion rather than a wall.

The CM-4000 series is built in spring return, push/pull, and push/turn to release operation. Push/pull and push/turn versions hold the contact until someone physically resets the button, which is what you want on an emergency release that has to stay in alarm. Spring return is momentary only. An integrated pneumatic time delay can also be specified.

The nearest match is the Dortronics 5210 series exit release, which uses a 1-9/16 inch diameter red mushroom push button mounted on a single gang plate. The Camden CM-4000 uses a 1-5/8 inch (40mm) free-spinning button on a 1/4 inch thick aluminum faceplate, with overall dimensions of 4-1/2 inch x 2-3/4 inch x 1-3/4 inch. Both are single gang mushroom exit releases, so the button diameter and faceplate construction are the points to confirm against the door prep.

Step up to the SDC 440 series large mushroom button emergency exit switch, which uses a 2-5/8 inch diameter heavy duty button. The Camden CM-4000 button is 1-5/8 inch (40mm) in diameter. If the opening calls for a larger strike target for emergency egress, the 440 is the larger-button option.

The CM-4000 is a non-illuminated mushroom button, available in red, blue, or green with logos or words engraved on the button. For an illuminated button, the SDC 410 series is an illuminated push button exit switch with narrow frame mount, and the SDC 420 series is an illuminated push button exit switch with a 2 inch button and code compliance.

The CM-4000 faceplate measures 4-1/2 inch x 2-3/4 inch, which needs a single gang footprint. Camden also casts CM-4000 series faceplates in narrow widths. If the mullion is too narrow for either, the SDC 410 series illuminated push button exit switch is built for narrow frame mount.

The 1-5/8 inch (40mm) button free-spins, so it can't be twisted off or pried by grabbing and turning it, and Camden calls it vandal and tamper resistant. Paired with the 1/4 inch cast aluminum plate, it's built for commercial traffic rather than residential use.

Red ships by default. Red and green are the standard stock choices, with blue also offered and black or yellow available on request. Buttons can be engraved with logos or wording. Since red is the default, specify green explicitly if you're using it as a request-to-exit rather than an emergency release.

The CM-4000 uses a 1-5/8 inch mushroom button on a single gang aluminum plate. The Dortronics 5210 Series is the closest direct match, a 1-9/16 inch red mushroom on a single gang plate engraved Push to Exit / Emergency Release. Within SDC, the 430 Series is a heavy duty industrial mushroom with a 1-1/2 inch round button, and the 440 Series steps up to a 2-5/8 inch mushroom for high visibility emergency release. If you need an illuminated button instead, SDC's 410 Series is narrow frame mount and the 420 Series uses 2 inch buttons.

They are similar in concept but not the same size. The SDC 430 series is a heavy duty industrial mushroom button switch with a 1-1/2 inch round button, while the Camden CM-4000 button is 1-5/8 inch (40mm) and free-spinning for vandal and tamper resistance. If an existing cutout was made for one, verify the faceplate footprint before swapping.

The SDC 420 series is an illuminated push button exit switch with a 2 inch button and code compliance called out in its description. The Camden CM-4000 is a 1-5/8 inch mushroom button rated 6 A @ 30 VDC, with a 100,000 cycle switch life and a temperature range of -13 F to 158 F for indoor and outdoor use, ordered N/O or N/C momentary. Match the selection to what the authority having jurisdiction requires for the egress door.

The Camden CM-4000 is rated for indoor and outdoor applications, with a -13 F to 158 F operating range, a 1/4 inch thick cast aluminum faceplate and a vandal and tamper-resistant free-spinning button. The SDC 430 series is a heavy duty industrial mushroom button switch with a 1-1/2 inch round button. The CM-4000 also offers push/pull and push/turn to release operation and an optional integrated pneumatic time delay if the gate circuit needs a held output.

No. It's a hardwired dry contact switch with no wireless communication and no programming. You run the contact wiring to your access control panel, operator, or lock power supply and that's the whole installation.