The system supports connection to two contact closure devices. They can be used to control devices such as an electronic door lock. Program the following features to enable the use of a contact closure.
•Contact Closure Group
Use this feature to specify which system extensions can activate each contact closure.
•Contact Closure Operation Type
Use this feature to specify how long the Contact Closures remain active when they are activated.
•Contact Closure Button
Extensions with programmable buttons can have buttons assigned to operate the contact closures.