Time Delay Function: Controlled via an onboard DIP switch, the delay allows the door to completely stop swinging or settle before the steel bolt drops into the strike plate. This prevents the bolt from slamming into the frame or jamming if the door bounces back. [1, 2, 3, 4]
Power Modes: Can operate in fail-safe (unlocks automatically during a power outage) or fail-secure (remains locked during a power outage) configurations depending on the model. [1, 2, 3]