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Von Duprin 22ALK alarm kit for 22 series exit devices. When the touch bar is depressed, the horn sounds to provide an audible means of signaling that the opening has been violated
- Requires a 1-1/4" mortise cylinder to arm/disarm, not included.
- The unit operates on one standard 9-volt alkaline battery
- When the ALK is used, standard dogging is removed.