• 99 ALK Von Duprin Alarm Kit

*Actual product and finish may vary

Von Duprin 99ALK Alarm Kit for use with 99 Series exit devices.

Specify 3’ or 4’

Less Cylinder


The ALK battery alarm kit is a simple yet effective way to deter unauthorized use of an opening. While the exit device is still a means of egress, the ALK kit contains an internal horn. When the touch bar is depressed, the horn sounds to provide an audible means of signaling that the opening has been violated. The alarm kit can be armed or disarmed by key. Thus allowing the exit device to be set in an armed or disarmed mode. The horn is rated at 85 decibel. 

The key switch uses a standard 1-1/4" (32mm) mortise cylinder with a straight cam (Schlage Cam reference B502-191) (not included).  The unit operates on one standard 9-volt alkaline battery. When the battery is weak, the horn will emit an intermittent low battery alert signal.

Also can be powered using the PS9 Power Supply. See PS9 for additional information.

Alarm kits are available with a choice of two switch kits, RX or LX. RX monitors the touchpad and is furnished standard. LX optional latch bolt monitoring is recommended for use with surface vertical rod exit devices. Specify ALK-LX. 

The ALK is available in two styles, 33A/99ALK, grooved cover and 35A/98ALK, smooth cover. 

The ALK includes “EMERGENCY EXIT ONLY. ALARM WILL SOUND” decal for application on door, or the SS push bar trim can be used instead of the door decal,specify SS push bar trim. 

The ALK is available with 2 optional circuit boards. External Inhibit (EI) allows for the use of external switch to be used to arm, disarm and reset the alarm. Auto Reset (AR) rearms the alarm after a preset time. AR is available in three factory set times – 1-1/2, 3 or 6 minutes.

When the ALK is used, standard dogging is removed. If cylinder dogging is required there are two choices. Special center case dogging is available or for 3’ or 4’ doors the ALK can be moved to the hinge side of the device and standard cylinder dogging can be added.

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99 ALK Von Duprin Alarm Kit

  • $549.45


Available Options



20-001 Schlage Mortise Cylinder, 1-1/4" Straight Cam

20-001 Schlage Mortise Cylinder, 1-1/4" Straight Cam

20-001 Schlage conventional (standard) 1-1/4” x straight cam Mortise Cylinder for use with Mortise L..

$66.52

98NL-OP Von Duprin Rim Exit Device with Night Latch Cylinder

98NL-OP Von Duprin Rim Exit Device with Night Latch Cylinder

Von Duprin 98NL-OP rim exit device with night latch (Key retracts latchbolt, optional trim required)..

$1,226.16

99EO Von Duprin Rim Exit Device - Exit Only

99EO Von Duprin Rim Exit Device - Exit Only

Von Duprin 99EO rim exit device exit only for all types of single and double doors with mullion.The..

$1,087.70

99DT Von Duprin Rim Exit Device - Dummy Trim

99DT Von Duprin Rim Exit Device - Dummy Trim

Von Duprin 99DT trim exit device with dummy trim (Pull when dogged) for all types of single and doub..

$1,309.36

99NL Von Duprin Rim Exit Device with Night Latch

99NL Von Duprin Rim Exit Device with Night Latch

Von Duprin 99NL rim exit device with night latch (Key retracts latchbolt) for all types of single an..

$1,330.99

99NL-OP Von Duprin Rim Exit Device - Night Latch Cylinder Assembly

99NL-OP Von Duprin Rim Exit Device - Night Latch Cylinder Assembly

Von Duprin 99NL-OP rim exit device with night latch (Key retracts latchbolt, optional trim required)..

$1,206.19

99TP Von Duprin Rim Exit Device - Thumbpiece

99TP Von Duprin Rim Exit Device - Thumbpiece

Von Duprin 99TP rim exit device thumbpiece (Key locks & unlocks) for all types of single and do..

$1,413.57

99L Von Duprin Rim Exit Device with Lever Trim

99L Von Duprin Rim Exit Device with Lever Trim

Von Duprin 99L-06 rim exit device lever trim (Key locks & unlocks) for all types of single and ..

$1,601.55

9957EO Von Duprin 3-Point panic bar

9957EO Von Duprin 3-Point panic bar

Von Duprin 9957EO 3-point locking panic bar, exit only for all types of single and double doors with..

$2,203.76

9927DT Von Duprin SVR Exit Device with Dummy Trim

9927DT Von Duprin SVR Exit Device with Dummy Trim

Von Duprin 9927DT surface vertical rod exit device dummy trim (Pull when dogged) for all types of s..

$1,798.16

9927NL Von Duprin SVR Exit Device with Night Latch

9927NL Von Duprin SVR Exit Device with Night Latch

Von Duprin 9927NL Von Duprin surface vertical rod exit device night latch (Key retracts latchbolt) ..

$1,766.96

9927NL-OP Von Duprin SVR Exit Device with Night Latch Cylinder

9927NL-OP Von Duprin SVR Exit Device with Night Latch Cylinder

9927NL-OP Von Duprin surface vertical rod exit device night latch (Key retracts latchbolt, optional..

$1,766.96

9927TP Von Duprin SVR Exit Device with Thumbpiece

9927TP Von Duprin SVR Exit Device with Thumbpiece

Von Duprin 9927TP surface vertical rod exit device thumbpiece (Key locks & unlocks) for all typ..

$1,891.76

9927L Von Duprin Surface Vertical Rod Exit Device - Lever Trim

9927L Von Duprin Surface Vertical Rod Exit Device - Lever Trim

Von Duprin 9927L-06 surface vertical rod exit device with lever trim (Key locks & unlocks) for a..

$2,078.96

9927TL Von Duprin SVR Exit Device with Turn Lever

9927TL Von Duprin SVR Exit Device with Turn Lever

Von Duprin 9927TL surface vertical rod exit device with  turn lever for all types of single and..

$2,422.42

9947EO Von Duprin Concealed Vertical Rod Exit Device - Exit Only

9947EO Von Duprin Concealed Vertical Rod Exit Device - Exit Only

Von Duprin 9947EO concealed vertical rod device, exit only for use on single or double metal doorsF..

$1,661.92

9947DT Von Duprin CVR Exit Device with Dummy Trim

9947DT Von Duprin CVR Exit Device with Dummy Trim

Von Duprin 9947DT concealed vertical rod device with dummy trim (Pull when dogged) for use on singl..

$1,922.96

9947NL Von Duprin CVR Exit Device with Night Latch

9947NL Von Duprin CVR Exit Device with Night Latch

Von Duprin 9947NL concealed vertical rod exit device with night latch (Key retracts latchbolt) for ..

$1,912.56

9947NL-OP Von Duprin CVR Exit Device with Night Latch Cylinder

9947NL-OP Von Duprin CVR Exit Device with Night Latch Cylinder

Von Duprin 9947NL-OP concealed vertical rod exit device with night latch (Key retracts latchbol..

$1,787.76

9947TP Von Duprin Concealed Vertical Rod Exit Device - Thumbpiece

9947TP Von Duprin Concealed Vertical Rod Exit Device - Thumbpiece

Von Duprin 9947TP concealed vertical rod exit device thumbpiece (Key locks unlocks) for use on sing..

$1,995.76

9947L Von Duprin CVR Exit Device with Lever Trim

9947L Von Duprin CVR Exit Device with Lever Trim

Von Duprin 9947L-06 concealed vertical rod exit device with lever trim (Key locks & unlocks) fo..

$2,162.16

9947TL Von Duprin CVR Exit Device with Turn Lever

9947TL Von Duprin CVR Exit Device with Turn Lever

Von Duprin 9947TL concealed vertical rod exit device with turn lever for use on single or double met..

$2,536.56

9975EO Von Duprin Mortise Exit Device, Exit Only

9975EO Von Duprin Mortise Exit Device, Exit Only

 Von Duprin 9975EO mortise exit device, exit only for all types of single or double doors.Von D..

$1,554.80

9975DT Von Duprin Mortise Exit Device with Dummy Trim

9975DT Von Duprin Mortise Exit Device with Dummy Trim

Von Duprin 9975DT mortise exit device with dummy trim (Pull when dogged) for all types of single or ..

$1,818.96

9975NL Von Duprin Mortise Exit Device with Night Latch

9975NL Von Duprin Mortise Exit Device with Night Latch

9975NL Von Duprin mortise exit device with night latch (Key retracts latchbolt) for all types of sin..

$1,825.15

9975TP Von Duprin Mortise Exit Device with Thumbpiece

9975TP Von Duprin Mortise Exit Device with Thumbpiece

Von Duprin 9975TP mortise exit device with thumbpiece (Key locks & unlocks) mortise exit for all..

$1,908.66

9975L Von Duprin Mortise Exit Device with Lever Trim

9975L Von Duprin Mortise Exit Device with Lever Trim

9975L-06 Von Duprin mortise exit device with lever trim (Key locks & unlocks) for all types of s..

$2,100.02

XP99EO Von Duprin Rim Exit Device - Exit Only

XP99EO Von Duprin Rim Exit Device - Exit Only

Von Duprin XP99EO rim exit device, exit only for all types of single and double doors with mullion...

$1,185.34

XP99DT Von Duprin Rim Exit Device with Dummy Trim

XP99DT Von Duprin Rim Exit Device with Dummy Trim

XP99DT Von Duprin rim exit device dummy trim (Pull when dogged) for all types of single and double d..

$1,331.60

XP99NL Von Duprin Rim Exit Device with Night Latch

XP99NL Von Duprin Rim Exit Device with Night Latch

 Von Duprin XP99NL rim exit device with night latch (Key retracts latch bolt) Exit Protector fe..

$1,434.16

XP99NL-OP Von Duprin Rim Exit Device with Night Latch Cylinder

XP99NL-OP Von Duprin Rim Exit Device with Night Latch Cylinder

Von Duprin XP99NL-OP rim exit device with night latch (Key retracts latch bolt, optional pull requir..

$1,309.36

XP99L Von Duprin Rim Exit Device with Lever Trim

XP99L Von Duprin Rim Exit Device with Lever Trim

Von Duprin XP99L-06 rim exit device lever trim (Key locks and unlocks) Exit Protector featuring the ..

$1,704.56

99NL-F Von Duprin Fire Rated - Rim Exit Device - Night Latch

99NL-F Von Duprin Fire Rated - Rim Exit Device - Night Latch

Von Duprin 99NL-F rim exit device fire rated with night latch (Key retracts latchbolt) for all types..

$1,496.98

99NL-OP-F Von Duprin Fire Rated - Rim Exit Device - Night Latch Cylinder Assembly

99NL-OP-F Von Duprin Fire Rated - Rim Exit Device - Night Latch Cylinder Assembly

Von Duprin 99NL-OP-F rim exit device fire rated night latch (Key retracts latchbolt, optional trim r..

$1,382.78

99TP-F Von Duprin Rim Exit Device, Fire Rated with Thumbpiece

99TP-F Von Duprin Rim Exit Device, Fire Rated with Thumbpiece

Von Duprin 99TP-F rim exit device fire rated with thumbpiece (Key locks & unlocks) for all types..

$1,591.15

99L-F Von Duprin Fire Rated - Rim Exit Device - Lever Trim

99L-F Von Duprin Fire Rated - Rim Exit Device - Lever Trim

Von Duprin 99L-F-06 rim exit device fire rated with lever trim(Key locks & unlocks) for al..

$1,766.18

XP99EO-F Von Duprin Fire Rated - Rim Exit Device - Exit Only

XP99EO-F Von Duprin Fire Rated - Rim Exit Device - Exit Only

Von Duprin XP99EO-F rim exit device, fire rated exit only Exit Protector featuring the new center ca..

$1,349.92

XP99NL-F Von Duprin Rim Exit Device - wpFire Rated - Night Latch

XP99NL-F Von Duprin Rim Exit Device - wpFire Rated - Night Latch

Von Duprin XP99NL-F is a night latch (Key retracts latch bolt) Exit Protector rim fire exit device f..

$1,600.56

XP99NL-OP-F Von Duprin Rim Exit Device-Fire Rated-Night Latch Cylinder

XP99NL-OP-F Von Duprin Rim Exit Device-Fire Rated-Night Latch Cylinder

Von Duprin XP99NL-OP-F rim exit device, fire rated with night latch (Key retracts latch bolt, option..

$1,486.16

XP99L-F Von Duprin Fire Rated - Rim Exit Device - Lever Trim

XP99L-F Von Duprin Fire Rated - Rim Exit Device - Lever Trim

Von Duprin XP99L-F rim exit device, fire rated with lever trim (Key locks and unlocks) Exit Protect..

$1,870.96

9927EO-F Von Duprin Fire Rated - Surface Vertical Rod Exit Device - Exit Only

9927EO-F Von Duprin Fire Rated - Surface Vertical Rod Exit Device - Exit Only

Von Duprin 9927EO-F surface vertical rod fire exit device exit only for all types of single and doub..

$1,861.08

9927NL-F Von Duprin Exit Device-SVR-Fire Rated with Night Latch

9927NL-F Von Duprin Exit Device-SVR-Fire Rated with Night Latch

Von Duprin 9927NL-F exit device, fire rated, surface vertical rod with night latch (Key retracts lat..

$2,037.36

9927NL-OP-F Von Duprin Exit Device Fire Rated-SVR-w/Night Latch Cylinder

9927NL-OP-F Von Duprin Exit Device Fire Rated-SVR-w/Night Latch Cylinder

Von Duprin 9927NL-OP-F exit device surface vertical rod fire rated with night latch (Key retracts la..

$1,974.96

9927TP-F Von Duprin Exit Device-SVR-Fire Rated-Thumbpiece

9927TP-F Von Duprin Exit Device-SVR-Fire Rated-Thumbpiece

Von Duprin 9927TP-F exit device surface vertical rod fire rated  with thumbpiece (Key locks &am..

$2,181.92

9927L-F Von Duprin Fire Rated - Surface Vertical Rod Exit Device - Lever Trim

9927L-F Von Duprin Fire Rated - Surface Vertical Rod Exit Device - Lever Trim

Von Duprin 9927L-06-F surface vertical rod fire exit device with lever trim (Key locks & unlocks..

$2,338.96

9927TL-F Von Duplin Exit Device-Fire Rated-SVR-Turn Lever

9927TL-F Von Duplin Exit Device-Fire Rated-SVR-Turn Lever

Von Duprin 9927TL-F exit device surface vertical rod fire rated with turn lever for all types of sin..

$2,692.56

9947EO-F Von Duprin Fire Rated - CVR Exit Device - Exit Only

9947EO-F Von Duprin Fire Rated - CVR Exit Device - Exit Only

Von Duprin 9947EO-F concealed vertical rod fire exit device exit only for use on pairs of doors up ..

$1,964.56

9947NL-F Von Duprin CVR Exit Device-Fire Rated-Night Latch

9947NL-F Von Duprin CVR Exit Device-Fire Rated-Night Latch

Von Duprin 9947NL-F concealed exit device vertical rod fire rated with night latch (Key retracts lat..

$2,203.76

9947NL-OP-F Von Duprin CVR-Exit Device-Fire Rated-Night Latch Cylinder

9947NL-OP-F Von Duprin CVR-Exit Device-Fire Rated-Night Latch Cylinder

Von Duprin 9947NL-OP-F exit device concealed vertical rod fire rated with night latch (Key retracts ..

$2,078.96

9947TP-F Von Duprin CVR-Exit Device-Fire Rated-Thumbpiece

9947TP-F Von Duprin CVR-Exit Device-Fire Rated-Thumbpiece

Von Duprin 9947TP-F Exit Device Concealed Vertical Rod Fire Rated with thumbpiece (Key locks unlocks..

$2,276.56

9947L-F Von Duprin CVR-Exit Device-Fire Rated-Lever Trim

9947L-F Von Duprin CVR-Exit Device-Fire Rated-Lever Trim

Von Duprin 9947L-F-06 exit device concealed vertical rod fire rated with lever trim (Key locks &..

$2,474.16

9947TL-F Von Duprin CVR-Exit Device-Fire Rated-Turn Lever

9947TL-F Von Duprin CVR-Exit Device-Fire Rated-Turn Lever

Von Duprin 9947TL-F exit device concealed vertical rod fire rated with turn lever for use on pairs o..

$2,827.76

9975EO-F Von Duprin Fire Rated - Mortise Exit Device - Exit Only

9975EO-F Von Duprin Fire Rated - Mortise Exit Device - Exit Only

Von Duprin 9975EO-F mortise exit device fire rated exit only for all types of single doors up t..

$1,767.48

9975NL-F Von Duprin Fire Rated - Mortise Exit Device - Night Latch

9975NL-F Von Duprin Fire Rated - Mortise Exit Device - Night Latch

Von Duprin 9975NL-F device has a grooved mechanism case. Fits door stiles as narrow as 4-3/4" (1..

$2,012.66

9975TP-F Von Duprin Mortise Exit Device Fire Rated w/Thumbpiece

9975TP-F Von Duprin Mortise Exit Device Fire Rated w/Thumbpiece

Von Duprin 9975TP-F device has a grooved mechanism case. Fits door stiles as narrow as 4-3/4" (1..

$2,100.02

9975L-F Fire Rated - Mortise Exit Device - Lever Trim

9975L-F Fire Rated - Mortise Exit Device - Lever Trim

Von Duprin 9975L-06-F mortise exit device fire rated with lever trim (Key locks & unlocks) for a..

$2,287.53

9927EO Von Duprin SVR Exit Device - Exit Only

9927EO Von Duprin SVR Exit Device - Exit Only

Von Duprin 9927EO surface vertical rod exit device exit only for all types of single and double doo..

$1,662.96