Von Duprin 2670 Guard-X: Alarmed Exit for a Secondary Door
Posted by Kent on 8th Oct 2026
An exit device that carries its own alarm
There are two ways to put an alarm on an emergency door. You can add a box to a panic bar that already exists, or you can start with a panic bar that has the alarm built in. The second way is the Von Duprin 2670 Guard-X, and it is the one I think of when the door is the kind that gets leaned on, kicked and tested by every teenager who walks by.
The catalog describes the Guard-X as secure, alarmed, code-compliant protection for secondary exits. The alarm lock identifies the door as an emergency exit and secures the opening against unauthorized use. That is a plain description of a plain job: a door nobody should use except in an emergency, and a device that makes sure everyone knows if they do.
How it is armed and disarmed
This is the part people ask about first. Per the listing, the Guard-X is armed and disarmed by key, using a standard rim cylinder. The rim cylinders are not included, so you buy them separately and pin them to your system.
It can also be operated from the outside. The listing says that for owner convenience, an authorized user can use a standard rim cylinder on the building exterior to arm and disarm it, and to enter or exit when needed. When you set up outside operation, the catalog recommends a pull trim, and it names the 210DT or 230DT. That gives people a handle to pull once the key has turned.
That detail matters because a lot of owners hear "alarmed exit" and assume the door is dead from the outside. It does not have to be. A manager with a key can disarm the device from the parking lot, walk in, and re-arm it, without going around to the front.
The sizes you plan around
The specs below come from the catalog. Check them against your door before you order, and do not round.
- Door width range: 36 inches to 48 inches.
- Device length: 32-1/2 inches.
- Touchbar projection: 4-1/8 inches neutral, 2-3/4 inches depressed.
- Latch case housing: 7 inches by 4-1/16 inches by 4-1/8 inches.
- Touchbar height: 40 inches above the finished floor at the center.
- Grade: certified to ANSI A156.3 Grade 1 panic hardware, rated at 250,000 cycles.
The 36 to 48 inch range makes this a single-door device for standard and wide openings. If your door is narrower than 36 inches, stop and call us before you buy. The projection numbers are the ones to check against anything on the wall near the door, like a hand dryer, a fire extinguisher cabinet or a radiator. A bar that sticks out four inches will hit those.
The latch case is large. If the door has an old surface-mounted rim device with a small case, expect to patch some paint or fill the old holes. The listing also says the sex bolts are not included, so budget for them with the cylinders.
What comes in the box
The catalog says the 267 strike comes as standard, along with a screw pack and the battery. The pushpad sign is furnished in English with Braille, and French and Spanish versions are available at no extra charge. Order the sign language for your building at the start. Do not wait until the inspector looks at it.
Three finishes in stock
Everything else about the three is the same. Pick the one that matches the door and frame, and look at the existing hardware on the building before you decide. A storefront door in dark bronze anodized aluminum wants the 313. A painted steel door in the back of a warehouse might want the black.
Guard-X or a battery alarm on the bar?
Both do the same thing for different budgets and different doors. A battery push-bar alarm, like the Alarm Lock PG21 and PG30, goes on an existing panic bar in minutes. It is the right answer when the door already has a good exit device and you just want noise. The Guard-X replaces the exit device. It makes sense when the old device is worn out, when the door is a target for abuse, or when you want the lock, the alarm and the key control in one unit that is rated Grade 1.
If the door gets used by staff all day, neither is the right answer. You want a proper access control solution. We cover that in our QEL-9848 article. And if you just need a plain exit with no way in from outside and no alarm, our 22 Series write-up is the cheaper path.
Before you order: five things to confirm
- Door width. Measure the actual door, not the opening. It has to land between 36 and 48 inches.
- Cylinder. You need a standard rim cylinder, and a second one if you want outside operation. Tell us the keying system so the cylinder is pinned to match the rest of the building.
- Outside operation. Decide whether anyone needs to arm, disarm or enter from the exterior. If yes, plan on the 210DT or 230DT pull trim the catalog names.
- Finish. Aluminum, dark bronze or black. Match the frame, not the old device, because the old device may have been replaced once already.
- Mounting hardware. Sex bolts are not included. Count the door thickness and the holes you are reusing.
The door also needs to be a door that should be alarmed. The listing is written for secondary exits, meaning exits that are not the main way in and out. If the door is a primary entrance that the public uses, this is the wrong device. A secondary exit has a simple rule: leave by it only in an emergency, or with a key in the cylinder. If your door fits that description, the Guard-X fits the door.
One more practical point. A sounding alarm gets ignored if nobody knows who is supposed to respond. Tell the staff what the Guard-X sounds like, who silences it, and where the key lives. The device does its job in seconds. The building has to do its part after that.
Common questions
How do I arm and disarm a Guard-X?
By key, using a standard rim cylinder. The cylinder is not included.
Can I operate it from the outside?
Yes. The catalog says an authorized user can use a rim cylinder on the exterior. It recommends a 210DT or 230DT pull trim for that setup.
What door widths does it fit?
36 inches to 48 inches.
Is it a panic device?
The catalog says the Guard-X is certified to ANSI A156.3 Grade 1 panic hardware, rated at 250,000 cycles.
What is included?
The 267 strike, the screw pack and the battery. Rim cylinders and sex bolts are not included.
The full line is on our Von Duprin page. Send us the door width, the finish and how the door is used, and we will confirm the Guard-X fits before you order.