alk require rx

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The RX switch is required to activate the ALK. The RX switch monitors the pushbar and will signal the ALK to go into alarm when the pushbar is depressed. The RX switch also allows free in...
ALK kit comes with standard RX switch. It can be ordered without the RX switch or with LX switch as an option.
All new 22, 33/35A and 98/99 series exit devices with exit alarm ALK option can be hard wired to the PS902 power supply as a standard  feature.
The standard exit alarm ALK devices are not available with dogging option. The device can be ordered through Engineering Special with dogging option on non fire exit devices. This special is o...
 One PS902 power supply will run up to six Von Duprin exit alarm ALK devices. PS902  power supply must be set to 24VDC to operate the exit alarm ALK.  Exit alarm ALK exit devices must be as clo...
PS902
If the spring on the Von Duprin exit alarm ALK board is not located correctly as shown on the instructions, then the vibration from the horn allows the cylinder to turn and shut the exit alarm ALK ...
The PS9 power supply was discontinued.  The new exit alarm ALK can either use a 9VDC battery or 24VDC regulated power supply. There is no direct replacement for Von Duprin PS9 power supply. Cur...
The current draw of a Von Duprin exit alarm ALK is .25 amp when alarm is activated.
Standard exit alarm ALK devices are available with cylinder dogging option as of October, 2011. The device can be ordered standard with cylinder dogging and exit alarm ALK option on non fire rat...