Chexit® Delayed Exit Device
Chexit Controlled Exit Device is designed to delay egress through an opening using panic or fire exit device for 15 seconds. Chexit meets the exacting requirements of NFPA101, Special Locking Arrangement.
Chexit is designed to be tied into a building's emergency system and will release immediately in an alarm condition. Available mounting styles include rim, mortise and vertical rod.
Interform developed two patents for Von Duprin: one for the method of delaying exits and the other for controlling exits.