Alarm Controls System Accessories - Ace Terminal Key Switches

Yes. Every model in the KA Series, the KA-105, KA-106, KA-107 and KA-108, is orderable keyed alike or keyed different. Keyed alike is the option to pick when one key needs to operate the switches at several openings; keyed different gives each station its own key. The catalog note is to add A for keyed alike.

For a momentary release, one that pulses the strike or drops the mag lock only while the key is turned and springs back, use the KA-107. For anything that has to stay latched in one state until someone returns with a key, use one of the on/off models: KA-105, KA-106 or KA-108. Momentary is the usual choice for a request-to-exit or a visitor release; maintained is what you want for putting a door into a held-unlocked mode during business hours.

Not with the KA Series. These are Ace round key locks with their own tubular key, so they will not accept a Schlage, Best or Corbin mortise cylinder and cannot be keyed into a building master system. If keying the switch into your existing system matters, go to a mortise cylinder keyswitch instead, such as the Securitron MK Standard Mortise Cylinder Keyswitch, which takes a standard mortise cylinder you supply keyed to your system.

They differ in the lock format the switch is built around. The Alarm Controls KA Series uses an Ace round key lock, supplied with two keys, and the key is removable in the On or Off position depending on model. The Securitron MK is a standard mortise cylinder keyswitch, so it takes a mortise cylinder rather than an integral Ace lock. Pick the KA Series when you want a self-contained switch with its own key, and the MK when the site keys its access control to the same mortise cylinder and keyway used elsewhere in the building.

Use the Securitron MK standard mortise cylinder keyswitch. It is built to take a mortise cylinder, so a locksmith can key it into the facility's existing keyway and master key system. The Alarm Controls KA Series is an Ace round key switch supplied with its own two keys, which means it operates on a separate key from the rest of the doors unless you order the keyed alike option to make the KA switches match each other.

Not a straight one. The MS Sedco 830 Series is a combination keyswitch and push plate switch for low voltage device activation, so it gives you both a keyed input and a push plate actuator in one station. The Alarm Controls KA Series is a key switch only - an Ace round on/off or momentary switch with screw terminals, rated 7A at 28 VDC or 7A at 125 VAC. Choose the 830 Series when the opening needs a push plate for normal traffic plus a key override; choose the KA Series when key control is the only actuation you want at that point.

Two keys ship with each switch. They are Ace style round keys, tubular rather than flat, so a locksmith cutting duplicates needs tubular key blanks and a tubular machine, not a standard flat key duplicator.

The KA Series is key only, one Ace lock and nothing else on the station. If the opening needs both a keyed override and a pushbutton or plate for everyday activation, the MS Sedco 830 Series combination keyswitch and push plate switch puts both on a single low voltage activation station, which saves cutting a second box into the wall on an automatic door.

The MS Sedco 830 Series combines a keyswitch and a push plate switch in one station for low voltage device activation, which handles both functions from a single device and a single box. Going with Alarm Controls KA Series Ace key switches instead means mounting the key switch on its own, since the KA-105, KA-106, KA-107 and KA-108 are key-operated on/off or momentary switches with no push plate function.

Within the Alarm Controls KA Series that is a model choice rather than a different brand. The KA-105 is an on/off keyswitch with the key removable in the On position, and the KA-106 is the same on/off switch with the key removable in the Off position. If the switch should only pulse a device rather than latch, the KA-107 is the momentary version. A Securitron MK mortise cylinder keyswitch is the alternative when the requirement is cylinder compatibility rather than a specific key-removal position.

Yes, they are commercial rated devices, sold as access control accessories for switching alarm, lock and low voltage circuits. The Ace lock and screw terminal build is the standard for a keyed override at a commercial opening where a toggle or button would be too easy for anyone to operate.